945 lines
31 KiB
C
945 lines
31 KiB
C
#include "test_tcp_oos.h"
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#include "lwip/tcp_impl.h"
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#include "lwip/stats.h"
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#include "tcp_helper.h"
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#if !LWIP_STATS || !TCP_STATS || !MEMP_STATS
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#error "This tests needs TCP- and MEMP-statistics enabled"
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#endif
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#if !TCP_QUEUE_OOSEQ
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#error "This tests needs TCP_QUEUE_OOSEQ enabled"
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#endif
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/** CHECK_SEGMENTS_ON_OOSEQ:
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* 1: check count, seqno and len of segments on pcb->ooseq (strict)
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* 0: only check that bytes are received in correct order (less strict) */
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#define CHECK_SEGMENTS_ON_OOSEQ 1
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#if CHECK_SEGMENTS_ON_OOSEQ
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#define EXPECT_OOSEQ(x) EXPECT(x)
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#else
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#define EXPECT_OOSEQ(x)
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#endif
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/* helper functions */
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/** Get the numbers of segments on the ooseq list */
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static int tcp_oos_count(struct tcp_pcb* pcb)
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{
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int num = 0;
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struct tcp_seg* seg = pcb->ooseq;
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while(seg != NULL) {
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num++;
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seg = seg->next;
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}
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return num;
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}
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/** Get the numbers of pbufs on the ooseq list */
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static int tcp_oos_pbuf_count(struct tcp_pcb* pcb)
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{
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int num = 0;
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struct tcp_seg* seg = pcb->ooseq;
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while(seg != NULL) {
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num += pbuf_clen(seg->p);
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seg = seg->next;
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}
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return num;
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}
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/** Get the seqno of a segment (by index) on the ooseq list
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*
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* @param pcb the pcb to check for ooseq segments
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* @param seg_index index of the segment on the ooseq list
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* @return seqno of the segment
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*/
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static u32_t
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tcp_oos_seg_seqno(struct tcp_pcb* pcb, int seg_index)
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{
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int num = 0;
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struct tcp_seg* seg = pcb->ooseq;
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/* then check the actual segment */
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while(seg != NULL) {
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if(num == seg_index) {
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return seg->tcphdr->seqno;
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}
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num++;
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seg = seg->next;
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}
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fail();
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return 0;
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}
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/** Get the tcplen (datalen + SYN/FIN) of a segment (by index) on the ooseq list
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*
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* @param pcb the pcb to check for ooseq segments
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* @param seg_index index of the segment on the ooseq list
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* @return tcplen of the segment
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*/
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static int
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tcp_oos_seg_tcplen(struct tcp_pcb* pcb, int seg_index)
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{
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int num = 0;
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struct tcp_seg* seg = pcb->ooseq;
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/* then check the actual segment */
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while(seg != NULL) {
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if(num == seg_index) {
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return TCP_TCPLEN(seg);
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}
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num++;
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seg = seg->next;
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}
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fail();
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return -1;
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}
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/** Get the tcplen (datalen + SYN/FIN) of all segments on the ooseq list
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*
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* @param pcb the pcb to check for ooseq segments
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* @return tcplen of all segment
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*/
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static int
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tcp_oos_tcplen(struct tcp_pcb* pcb)
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{
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int len = 0;
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struct tcp_seg* seg = pcb->ooseq;
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/* then check the actual segment */
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while(seg != NULL) {
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len += TCP_TCPLEN(seg);
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seg = seg->next;
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}
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return len;
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}
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/* Setup/teardown functions */
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static void
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tcp_oos_setup(void)
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{
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tcp_remove_all();
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}
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static void
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tcp_oos_teardown(void)
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{
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tcp_remove_all();
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}
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/* Test functions */
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/** create multiple segments and pass them to tcp_input in a wrong
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* order to see if ooseq-caching works correctly
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* FIN is received in out-of-sequence segments only */
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START_TEST(test_tcp_recv_ooseq_FIN_OOSEQ)
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{
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struct test_tcp_counters counters;
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struct tcp_pcb* pcb;
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struct pbuf *p_8_9, *p_4_8, *p_4_10, *p_2_14, *p_fin, *pinseq;
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char data[] = {
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1, 2, 3, 4,
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5, 6, 7, 8,
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9, 10, 11, 12,
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13, 14, 15, 16};
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ip_addr_t remote_ip, local_ip;
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u16_t data_len;
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u16_t remote_port = 0x100, local_port = 0x101;
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struct netif netif;
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LWIP_UNUSED_ARG(_i);
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/* initialize local vars */
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memset(&netif, 0, sizeof(netif));
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IP4_ADDR(&local_ip, 192, 168, 1, 1);
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IP4_ADDR(&remote_ip, 192, 168, 1, 2);
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data_len = sizeof(data);
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/* initialize counter struct */
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memset(&counters, 0, sizeof(counters));
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counters.expected_data_len = data_len;
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counters.expected_data = data;
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/* create and initialize the pcb */
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pcb = test_tcp_new_counters_pcb(&counters);
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EXPECT_RET(pcb != NULL);
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tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
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/* create segments */
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/* pinseq is sent as last segment! */
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pinseq = tcp_create_rx_segment(pcb, &data[0], 4, 0, 0, TCP_ACK);
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/* p1: 8 bytes before FIN */
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/* seqno: 8..16 */
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p_8_9 = tcp_create_rx_segment(pcb, &data[8], 8, 8, 0, TCP_ACK|TCP_FIN);
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/* p2: 4 bytes before p1, including the first 4 bytes of p1 (partly duplicate) */
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/* seqno: 4..11 */
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p_4_8 = tcp_create_rx_segment(pcb, &data[4], 8, 4, 0, TCP_ACK);
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/* p3: same as p2 but 2 bytes longer */
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/* seqno: 4..13 */
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p_4_10 = tcp_create_rx_segment(pcb, &data[4], 10, 4, 0, TCP_ACK);
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/* p4: 14 bytes before FIN, includes data from p1 and p2, plus partly from pinseq */
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/* seqno: 2..15 */
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p_2_14 = tcp_create_rx_segment(pcb, &data[2], 14, 2, 0, TCP_ACK);
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/* FIN, seqno 16 */
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p_fin = tcp_create_rx_segment(pcb, NULL, 0,16, 0, TCP_ACK|TCP_FIN);
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EXPECT(pinseq != NULL);
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EXPECT(p_8_9 != NULL);
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EXPECT(p_4_8 != NULL);
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EXPECT(p_4_10 != NULL);
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EXPECT(p_2_14 != NULL);
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EXPECT(p_fin != NULL);
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if ((pinseq != NULL) && (p_8_9 != NULL) && (p_4_8 != NULL) && (p_4_10 != NULL) && (p_2_14 != NULL) && (p_fin != NULL)) {
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/* pass the segment to tcp_input */
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test_tcp_input(p_8_9, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 8);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 9); /* includes FIN */
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/* pass the segment to tcp_input */
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test_tcp_input(p_4_8, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 4);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 4);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 1) == 8);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 1) == 9); /* includes FIN */
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/* pass the segment to tcp_input */
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test_tcp_input(p_4_10, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* ooseq queue: unchanged */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 4);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 4);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 1) == 8);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 1) == 9); /* includes FIN */
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/* pass the segment to tcp_input */
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test_tcp_input(p_2_14, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 15); /* includes FIN */
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/* pass the segment to tcp_input */
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test_tcp_input(p_fin, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* ooseq queue: unchanged */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 15); /* includes FIN */
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/* pass the segment to tcp_input */
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test_tcp_input(pinseq, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 1);
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EXPECT(counters.recv_calls == 1);
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EXPECT(counters.recved_bytes == data_len);
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EXPECT(counters.err_calls == 0);
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EXPECT(pcb->ooseq == NULL);
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}
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/* make sure the pcb is freed */
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EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
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tcp_abort(pcb);
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EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
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}
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END_TEST
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/** create multiple segments and pass them to tcp_input in a wrong
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* order to see if ooseq-caching works correctly
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* FIN is received IN-SEQUENCE at the end */
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START_TEST(test_tcp_recv_ooseq_FIN_INSEQ)
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{
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struct test_tcp_counters counters;
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struct tcp_pcb* pcb;
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struct pbuf *p_1_2, *p_4_8, *p_3_11, *p_2_12, *p_15_1, *p_15_1a, *pinseq, *pinseqFIN;
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char data[] = {
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1, 2, 3, 4,
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5, 6, 7, 8,
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9, 10, 11, 12,
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13, 14, 15, 16};
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ip_addr_t remote_ip, local_ip;
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u16_t data_len;
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u16_t remote_port = 0x100, local_port = 0x101;
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struct netif netif;
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LWIP_UNUSED_ARG(_i);
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/* initialize local vars */
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memset(&netif, 0, sizeof(netif));
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IP4_ADDR(&local_ip, 192, 168, 1, 1);
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IP4_ADDR(&remote_ip, 192, 168, 1, 2);
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data_len = sizeof(data);
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/* initialize counter struct */
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memset(&counters, 0, sizeof(counters));
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counters.expected_data_len = data_len;
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counters.expected_data = data;
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/* create and initialize the pcb */
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pcb = test_tcp_new_counters_pcb(&counters);
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EXPECT_RET(pcb != NULL);
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tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
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/* create segments */
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/* p1: 7 bytes - 2 before FIN */
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/* seqno: 1..2 */
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p_1_2 = tcp_create_rx_segment(pcb, &data[1], 2, 1, 0, TCP_ACK);
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/* p2: 4 bytes before p1, including the first 4 bytes of p1 (partly duplicate) */
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/* seqno: 4..11 */
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p_4_8 = tcp_create_rx_segment(pcb, &data[4], 8, 4, 0, TCP_ACK);
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/* p3: same as p2 but 2 bytes longer and one byte more at the front */
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/* seqno: 3..13 */
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p_3_11 = tcp_create_rx_segment(pcb, &data[3], 11, 3, 0, TCP_ACK);
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/* p4: 13 bytes - 2 before FIN - should be ignored as contained in p1 and p3 */
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/* seqno: 2..13 */
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p_2_12 = tcp_create_rx_segment(pcb, &data[2], 12, 2, 0, TCP_ACK);
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/* pinseq is the first segment that is held back to create ooseq! */
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/* seqno: 0..3 */
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pinseq = tcp_create_rx_segment(pcb, &data[0], 4, 0, 0, TCP_ACK);
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/* p5: last byte before FIN */
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/* seqno: 15 */
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p_15_1 = tcp_create_rx_segment(pcb, &data[15], 1, 15, 0, TCP_ACK);
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/* p6: same as p5, should be ignored */
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p_15_1a= tcp_create_rx_segment(pcb, &data[15], 1, 15, 0, TCP_ACK);
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/* pinseqFIN: last 2 bytes plus FIN */
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/* only segment containing seqno 14 and FIN */
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pinseqFIN = tcp_create_rx_segment(pcb, &data[14], 2, 14, 0, TCP_ACK|TCP_FIN);
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EXPECT(pinseq != NULL);
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EXPECT(p_1_2 != NULL);
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EXPECT(p_4_8 != NULL);
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EXPECT(p_3_11 != NULL);
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EXPECT(p_2_12 != NULL);
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EXPECT(p_15_1 != NULL);
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EXPECT(p_15_1a != NULL);
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EXPECT(pinseqFIN != NULL);
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if ((pinseq != NULL) && (p_1_2 != NULL) && (p_4_8 != NULL) && (p_3_11 != NULL) && (p_2_12 != NULL)
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&& (p_15_1 != NULL) && (p_15_1a != NULL) && (pinseqFIN != NULL)) {
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/* pass the segment to tcp_input */
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test_tcp_input(p_1_2, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 2);
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/* pass the segment to tcp_input */
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test_tcp_input(p_4_8, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 1) == 4);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 1) == 8);
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/* pass the segment to tcp_input */
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test_tcp_input(p_3_11, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 2);
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/* p_3_11 has removed p_4_8 from ooseq */
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 1) == 3);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 1) == 11);
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/* pass the segment to tcp_input */
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test_tcp_input(p_2_12, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 0);
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EXPECT(counters.recved_bytes == 0);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 1) == 2);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 1) == 12);
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/* pass the segment to tcp_input */
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test_tcp_input(pinseq, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 1);
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EXPECT(counters.recved_bytes == 14);
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EXPECT(counters.err_calls == 0);
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EXPECT(pcb->ooseq == NULL);
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/* pass the segment to tcp_input */
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test_tcp_input(p_15_1, &netif);
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/* check if counters are as expected */
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EXPECT(counters.close_calls == 0);
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EXPECT(counters.recv_calls == 1);
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EXPECT(counters.recved_bytes == 14);
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EXPECT(counters.err_calls == 0);
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/* check ooseq queue */
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EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
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EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 15);
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EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 1);
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/* pass the segment to tcp_input */
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test_tcp_input(p_15_1a, &netif);
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/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 1);
|
|
EXPECT(counters.recved_bytes == 14);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue: unchanged */
|
|
EXPECT_OOSEQ(tcp_oos_count(pcb) == 1);
|
|
EXPECT_OOSEQ(tcp_oos_seg_seqno(pcb, 0) == 15);
|
|
EXPECT_OOSEQ(tcp_oos_seg_tcplen(pcb, 0) == 1);
|
|
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(pinseqFIN, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 1);
|
|
EXPECT(counters.recv_calls == 2);
|
|
EXPECT(counters.recved_bytes == data_len);
|
|
EXPECT(counters.err_calls == 0);
|
|
EXPECT(pcb->ooseq == NULL);
|
|
}
|
|
|
|
/* make sure the pcb is freed */
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
|
|
tcp_abort(pcb);
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
|
|
}
|
|
END_TEST
|
|
|
|
static char data_full_wnd[TCP_WND];
|
|
|
|
/** create multiple segments and pass them to tcp_input with the first segment missing
|
|
* to simulate overruning the rxwin with ooseq queueing enabled */
|
|
START_TEST(test_tcp_recv_ooseq_overrun_rxwin)
|
|
{
|
|
#if !TCP_OOSEQ_MAX_BYTES && !TCP_OOSEQ_MAX_PBUFS
|
|
int i, k;
|
|
struct test_tcp_counters counters;
|
|
struct tcp_pcb* pcb;
|
|
struct pbuf *pinseq, *p_ovr;
|
|
ip_addr_t remote_ip, local_ip;
|
|
u16_t remote_port = 0x100, local_port = 0x101;
|
|
struct netif netif;
|
|
int datalen = 0;
|
|
int datalen2;
|
|
|
|
for(i = 0; i < sizeof(data_full_wnd); i++) {
|
|
data_full_wnd[i] = (char)i;
|
|
}
|
|
|
|
/* initialize local vars */
|
|
memset(&netif, 0, sizeof(netif));
|
|
IP4_ADDR(&local_ip, 192, 168, 1, 1);
|
|
IP4_ADDR(&remote_ip, 192, 168, 1, 2);
|
|
/* initialize counter struct */
|
|
memset(&counters, 0, sizeof(counters));
|
|
counters.expected_data_len = TCP_WND;
|
|
counters.expected_data = data_full_wnd;
|
|
|
|
/* create and initialize the pcb */
|
|
pcb = test_tcp_new_counters_pcb(&counters);
|
|
EXPECT_RET(pcb != NULL);
|
|
tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
|
|
pcb->rcv_nxt = 0x8000;
|
|
|
|
/* create segments */
|
|
/* pinseq is sent as last segment! */
|
|
pinseq = tcp_create_rx_segment(pcb, &data_full_wnd[0], TCP_MSS, 0, 0, TCP_ACK);
|
|
|
|
for(i = TCP_MSS, k = 0; i < TCP_WND; i += TCP_MSS, k++) {
|
|
int count, expected_datalen;
|
|
struct pbuf *p = tcp_create_rx_segment(pcb, &data_full_wnd[TCP_MSS*(k+1)],
|
|
TCP_MSS, TCP_MSS*(k+1), 0, TCP_ACK);
|
|
EXPECT_RET(p != NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue */
|
|
count = tcp_oos_count(pcb);
|
|
EXPECT_OOSEQ(count == k+1);
|
|
datalen = tcp_oos_tcplen(pcb);
|
|
if (i + TCP_MSS < TCP_WND) {
|
|
expected_datalen = (k+1)*TCP_MSS;
|
|
} else {
|
|
expected_datalen = TCP_WND - TCP_MSS;
|
|
}
|
|
if (datalen != expected_datalen) {
|
|
EXPECT_OOSEQ(datalen == expected_datalen);
|
|
}
|
|
}
|
|
|
|
/* pass in one more segment, cleary overrunning the rxwin */
|
|
p_ovr = tcp_create_rx_segment(pcb, &data_full_wnd[TCP_MSS*(k+1)], TCP_MSS, TCP_MSS*(k+1), 0, TCP_ACK);
|
|
EXPECT_RET(p_ovr != NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p_ovr, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue */
|
|
EXPECT_OOSEQ(tcp_oos_count(pcb) == k);
|
|
datalen2 = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(datalen == datalen2);
|
|
|
|
/* now pass inseq */
|
|
test_tcp_input(pinseq, &netif);
|
|
EXPECT(pcb->ooseq == NULL);
|
|
|
|
/* make sure the pcb is freed */
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
|
|
tcp_abort(pcb);
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
|
|
#endif /* !TCP_OOSEQ_MAX_BYTES && !TCP_OOSEQ_MAX_PBUFS */
|
|
LWIP_UNUSED_ARG(_i);
|
|
}
|
|
END_TEST
|
|
|
|
START_TEST(test_tcp_recv_ooseq_max_bytes)
|
|
{
|
|
#if TCP_OOSEQ_MAX_BYTES && (TCP_OOSEQ_MAX_BYTES < (TCP_WND + 1)) && (PBUF_POOL_BUFSIZE >= (TCP_MSS + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN))
|
|
int i, k;
|
|
struct test_tcp_counters counters;
|
|
struct tcp_pcb* pcb;
|
|
struct pbuf *p_ovr;
|
|
ip_addr_t remote_ip, local_ip;
|
|
u16_t remote_port = 0x100, local_port = 0x101;
|
|
struct netif netif;
|
|
int datalen = 0;
|
|
int datalen2;
|
|
|
|
for(i = 0; i < sizeof(data_full_wnd); i++) {
|
|
data_full_wnd[i] = (char)i;
|
|
}
|
|
|
|
/* initialize local vars */
|
|
memset(&netif, 0, sizeof(netif));
|
|
IP4_ADDR(&local_ip, 192, 168, 1, 1);
|
|
IP4_ADDR(&remote_ip, 192, 168, 1, 2);
|
|
/* initialize counter struct */
|
|
memset(&counters, 0, sizeof(counters));
|
|
counters.expected_data_len = TCP_WND;
|
|
counters.expected_data = data_full_wnd;
|
|
|
|
/* create and initialize the pcb */
|
|
pcb = test_tcp_new_counters_pcb(&counters);
|
|
EXPECT_RET(pcb != NULL);
|
|
tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
|
|
pcb->rcv_nxt = 0x8000;
|
|
|
|
/* don't 'recv' the first segment (1 byte) so that all other segments will be ooseq */
|
|
|
|
/* create segments and 'recv' them */
|
|
for(k = 1, i = 1; k < TCP_OOSEQ_MAX_BYTES; k += TCP_MSS, i++) {
|
|
int count;
|
|
struct pbuf *p = tcp_create_rx_segment(pcb, &data_full_wnd[k],
|
|
TCP_MSS, k, 0, TCP_ACK);
|
|
EXPECT_RET(p != NULL);
|
|
EXPECT_RET(p->next == NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue */
|
|
count = tcp_oos_pbuf_count(pcb);
|
|
EXPECT_OOSEQ(count == i);
|
|
datalen = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(datalen == (i * TCP_MSS));
|
|
}
|
|
|
|
/* pass in one more segment, overrunning the limit */
|
|
p_ovr = tcp_create_rx_segment(pcb, &data_full_wnd[k+1], 1, k+1, 0, TCP_ACK);
|
|
EXPECT_RET(p_ovr != NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p_ovr, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue (ensure the new segment was not accepted) */
|
|
EXPECT_OOSEQ(tcp_oos_count(pcb) == (i-1));
|
|
datalen2 = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(datalen2 == ((i-1) * TCP_MSS));
|
|
|
|
/* make sure the pcb is freed */
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
|
|
tcp_abort(pcb);
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
|
|
#endif /* TCP_OOSEQ_MAX_BYTES && (TCP_OOSEQ_MAX_BYTES < (TCP_WND + 1)) && (PBUF_POOL_BUFSIZE >= (TCP_MSS + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)) */
|
|
LWIP_UNUSED_ARG(_i);
|
|
}
|
|
END_TEST
|
|
|
|
START_TEST(test_tcp_recv_ooseq_max_pbufs)
|
|
{
|
|
#if TCP_OOSEQ_MAX_PBUFS && (TCP_OOSEQ_MAX_PBUFS < ((TCP_WND / TCP_MSS) + 1)) && (PBUF_POOL_BUFSIZE >= (TCP_MSS + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN))
|
|
int i;
|
|
struct test_tcp_counters counters;
|
|
struct tcp_pcb* pcb;
|
|
struct pbuf *p_ovr;
|
|
ip_addr_t remote_ip, local_ip;
|
|
u16_t remote_port = 0x100, local_port = 0x101;
|
|
struct netif netif;
|
|
int datalen = 0;
|
|
int datalen2;
|
|
|
|
for(i = 0; i < sizeof(data_full_wnd); i++) {
|
|
data_full_wnd[i] = (char)i;
|
|
}
|
|
|
|
/* initialize local vars */
|
|
memset(&netif, 0, sizeof(netif));
|
|
IP4_ADDR(&local_ip, 192, 168, 1, 1);
|
|
IP4_ADDR(&remote_ip, 192, 168, 1, 2);
|
|
/* initialize counter struct */
|
|
memset(&counters, 0, sizeof(counters));
|
|
counters.expected_data_len = TCP_WND;
|
|
counters.expected_data = data_full_wnd;
|
|
|
|
/* create and initialize the pcb */
|
|
pcb = test_tcp_new_counters_pcb(&counters);
|
|
EXPECT_RET(pcb != NULL);
|
|
tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
|
|
pcb->rcv_nxt = 0x8000;
|
|
|
|
/* don't 'recv' the first segment (1 byte) so that all other segments will be ooseq */
|
|
|
|
/* create segments and 'recv' them */
|
|
for(i = 1; i <= TCP_OOSEQ_MAX_PBUFS; i++) {
|
|
int count;
|
|
struct pbuf *p = tcp_create_rx_segment(pcb, &data_full_wnd[i],
|
|
1, i, 0, TCP_ACK);
|
|
EXPECT_RET(p != NULL);
|
|
EXPECT_RET(p->next == NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue */
|
|
count = tcp_oos_pbuf_count(pcb);
|
|
EXPECT_OOSEQ(count == i);
|
|
datalen = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(datalen == i);
|
|
}
|
|
|
|
/* pass in one more segment, overrunning the limit */
|
|
p_ovr = tcp_create_rx_segment(pcb, &data_full_wnd[i+1], 1, i+1, 0, TCP_ACK);
|
|
EXPECT_RET(p_ovr != NULL);
|
|
/* pass the segment to tcp_input */
|
|
test_tcp_input(p_ovr, &netif);
|
|
/* check if counters are as expected */
|
|
EXPECT(counters.close_calls == 0);
|
|
EXPECT(counters.recv_calls == 0);
|
|
EXPECT(counters.recved_bytes == 0);
|
|
EXPECT(counters.err_calls == 0);
|
|
/* check ooseq queue (ensure the new segment was not accepted) */
|
|
EXPECT_OOSEQ(tcp_oos_count(pcb) == (i-1));
|
|
datalen2 = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(datalen2 == (i-1));
|
|
|
|
/* make sure the pcb is freed */
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
|
|
tcp_abort(pcb);
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
|
|
#endif /* TCP_OOSEQ_MAX_PBUFS && (TCP_OOSEQ_MAX_BYTES < (TCP_WND + 1)) && (PBUF_POOL_BUFSIZE >= (TCP_MSS + PBUF_LINK_HLEN + PBUF_IP_HLEN + PBUF_TRANSPORT_HLEN)) */
|
|
LWIP_UNUSED_ARG(_i);
|
|
}
|
|
END_TEST
|
|
|
|
static void
|
|
check_rx_counters(struct tcp_pcb *pcb, struct test_tcp_counters *counters, u32_t exp_close_calls, u32_t exp_rx_calls,
|
|
u32_t exp_rx_bytes, u32_t exp_err_calls, int exp_oos_count, int exp_oos_len)
|
|
{
|
|
int oos_len;
|
|
EXPECT(counters->close_calls == exp_close_calls);
|
|
EXPECT(counters->recv_calls == exp_rx_calls);
|
|
EXPECT(counters->recved_bytes == exp_rx_bytes);
|
|
EXPECT(counters->err_calls == exp_err_calls);
|
|
/* check that pbuf is queued in ooseq */
|
|
EXPECT_OOSEQ(tcp_oos_count(pcb) == exp_oos_count);
|
|
oos_len = tcp_oos_tcplen(pcb);
|
|
EXPECT_OOSEQ(exp_oos_len == oos_len);
|
|
}
|
|
|
|
/* this test uses 4 packets:
|
|
* - data (len=TCP_MSS)
|
|
* - FIN
|
|
* - data after FIN (len=1) (invalid)
|
|
* - 2nd FIN (invalid)
|
|
*
|
|
* the parameter 'delay_packet' is a bitmask that choses which on these packets is ooseq
|
|
*/
|
|
static void test_tcp_recv_ooseq_double_FINs(int delay_packet)
|
|
{
|
|
int i, k;
|
|
struct test_tcp_counters counters;
|
|
struct tcp_pcb* pcb;
|
|
struct pbuf *p_normal_fin, *p_data_after_fin, *p, *p_2nd_fin_ooseq;
|
|
ip_addr_t remote_ip, local_ip;
|
|
u16_t remote_port = 0x100, local_port = 0x101;
|
|
struct netif netif;
|
|
u32_t exp_rx_calls = 0, exp_rx_bytes = 0, exp_close_calls = 0, exp_oos_pbufs = 0, exp_oos_tcplen = 0;
|
|
int first_dropped = 0xff;
|
|
int last_dropped = 0;
|
|
|
|
for(i = 0; i < sizeof(data_full_wnd); i++) {
|
|
data_full_wnd[i] = (char)i;
|
|
}
|
|
|
|
/* initialize local vars */
|
|
memset(&netif, 0, sizeof(netif));
|
|
IP4_ADDR(&local_ip, 192, 168, 1, 1);
|
|
IP4_ADDR(&remote_ip, 192, 168, 1, 2);
|
|
/* initialize counter struct */
|
|
memset(&counters, 0, sizeof(counters));
|
|
counters.expected_data_len = TCP_WND;
|
|
counters.expected_data = data_full_wnd;
|
|
|
|
/* create and initialize the pcb */
|
|
pcb = test_tcp_new_counters_pcb(&counters);
|
|
EXPECT_RET(pcb != NULL);
|
|
tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
|
|
pcb->rcv_nxt = 0x8000;
|
|
|
|
/* create segments */
|
|
p = tcp_create_rx_segment(pcb, &data_full_wnd[0], TCP_MSS, 0, 0, TCP_ACK);
|
|
p_normal_fin = tcp_create_rx_segment(pcb, NULL, 0, TCP_MSS, 0, TCP_ACK|TCP_FIN);
|
|
k = 1;
|
|
p_data_after_fin = tcp_create_rx_segment(pcb, &data_full_wnd[TCP_MSS+1], k, TCP_MSS+1, 0, TCP_ACK);
|
|
p_2nd_fin_ooseq = tcp_create_rx_segment(pcb, NULL, 0, TCP_MSS+1+k, 0, TCP_ACK|TCP_FIN);
|
|
|
|
if(delay_packet & 1) {
|
|
/* drop normal data */
|
|
first_dropped = 1;
|
|
last_dropped = 1;
|
|
} else {
|
|
/* send normal data */
|
|
test_tcp_input(p, &netif);
|
|
exp_rx_calls++;
|
|
exp_rx_bytes += TCP_MSS;
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 2) {
|
|
/* drop FIN */
|
|
if(first_dropped > 2) {
|
|
first_dropped = 2;
|
|
}
|
|
last_dropped = 2;
|
|
} else {
|
|
/* send FIN */
|
|
test_tcp_input(p_normal_fin, &netif);
|
|
if (first_dropped < 2) {
|
|
/* already dropped packets, this one is ooseq */
|
|
exp_oos_pbufs++;
|
|
exp_oos_tcplen++;
|
|
} else {
|
|
/* inseq */
|
|
exp_close_calls++;
|
|
}
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 4) {
|
|
/* drop data-after-FIN */
|
|
if(first_dropped > 3) {
|
|
first_dropped = 3;
|
|
}
|
|
last_dropped = 3;
|
|
} else {
|
|
/* send data-after-FIN */
|
|
test_tcp_input(p_data_after_fin, &netif);
|
|
if (first_dropped < 3) {
|
|
/* already dropped packets, this one is ooseq */
|
|
if (delay_packet & 2) {
|
|
/* correct FIN was ooseq */
|
|
exp_oos_pbufs++;
|
|
exp_oos_tcplen += k;
|
|
}
|
|
} else {
|
|
/* inseq: no change */
|
|
}
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 8) {
|
|
/* drop 2nd-FIN */
|
|
if(first_dropped > 4) {
|
|
first_dropped = 4;
|
|
}
|
|
last_dropped = 4;
|
|
} else {
|
|
/* send 2nd-FIN */
|
|
test_tcp_input(p_2nd_fin_ooseq, &netif);
|
|
if (first_dropped < 3) {
|
|
/* already dropped packets, this one is ooseq */
|
|
if (delay_packet & 2) {
|
|
/* correct FIN was ooseq */
|
|
exp_oos_pbufs++;
|
|
exp_oos_tcplen++;
|
|
}
|
|
} else {
|
|
/* inseq: no change */
|
|
}
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 1) {
|
|
/* dropped normal data before */
|
|
test_tcp_input(p, &netif);
|
|
exp_rx_calls++;
|
|
exp_rx_bytes += TCP_MSS;
|
|
if((delay_packet & 2) == 0) {
|
|
/* normal FIN was NOT delayed */
|
|
exp_close_calls++;
|
|
exp_oos_pbufs = exp_oos_tcplen = 0;
|
|
}
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 2) {
|
|
/* dropped normal FIN before */
|
|
test_tcp_input(p_normal_fin, &netif);
|
|
exp_close_calls++;
|
|
exp_oos_pbufs = exp_oos_tcplen = 0;
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 4) {
|
|
/* dropped data-after-FIN before */
|
|
test_tcp_input(p_data_after_fin, &netif);
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
if(delay_packet & 8) {
|
|
/* dropped 2nd-FIN before */
|
|
test_tcp_input(p_2nd_fin_ooseq, &netif);
|
|
}
|
|
/* check if counters are as expected */
|
|
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
|
|
|
|
/* check that ooseq data has been dumped */
|
|
EXPECT(pcb->ooseq == NULL);
|
|
|
|
/* make sure the pcb is freed */
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
|
|
tcp_abort(pcb);
|
|
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
|
|
}
|
|
|
|
/** create multiple segments and pass them to tcp_input with the first segment missing
|
|
* to simulate overruning the rxwin with ooseq queueing enabled */
|
|
#define FIN_TEST(name, num) \
|
|
START_TEST(name) \
|
|
{ \
|
|
LWIP_UNUSED_ARG(_i); \
|
|
test_tcp_recv_ooseq_double_FINs(num); \
|
|
} \
|
|
END_TEST
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_0, 0)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_1, 1)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_2, 2)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_3, 3)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_4, 4)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_5, 5)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_6, 6)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_7, 7)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_8, 8)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_9, 9)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_10, 10)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_11, 11)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_12, 12)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_13, 13)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_14, 14)
|
|
FIN_TEST(test_tcp_recv_ooseq_double_FIN_15, 15)
|
|
|
|
|
|
/** Create the suite including all tests for this module */
|
|
Suite *
|
|
tcp_oos_suite(void)
|
|
{
|
|
TFun tests[] = {
|
|
test_tcp_recv_ooseq_FIN_OOSEQ,
|
|
test_tcp_recv_ooseq_FIN_INSEQ,
|
|
test_tcp_recv_ooseq_overrun_rxwin,
|
|
test_tcp_recv_ooseq_max_bytes,
|
|
test_tcp_recv_ooseq_max_pbufs,
|
|
test_tcp_recv_ooseq_double_FIN_0,
|
|
test_tcp_recv_ooseq_double_FIN_1,
|
|
test_tcp_recv_ooseq_double_FIN_2,
|
|
test_tcp_recv_ooseq_double_FIN_3,
|
|
test_tcp_recv_ooseq_double_FIN_4,
|
|
test_tcp_recv_ooseq_double_FIN_5,
|
|
test_tcp_recv_ooseq_double_FIN_6,
|
|
test_tcp_recv_ooseq_double_FIN_7,
|
|
test_tcp_recv_ooseq_double_FIN_8,
|
|
test_tcp_recv_ooseq_double_FIN_9,
|
|
test_tcp_recv_ooseq_double_FIN_10,
|
|
test_tcp_recv_ooseq_double_FIN_11,
|
|
test_tcp_recv_ooseq_double_FIN_12,
|
|
test_tcp_recv_ooseq_double_FIN_13,
|
|
test_tcp_recv_ooseq_double_FIN_14,
|
|
test_tcp_recv_ooseq_double_FIN_15
|
|
};
|
|
return create_suite("TCP_OOS", tests, sizeof(tests)/sizeof(TFun), tcp_oos_setup, tcp_oos_teardown);
|
|
}
|