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test checksum primitives, enforce rx frag test

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Sergio R. Caprile committed 2025-07-08 13:57:03 -03:00
1 parent b3ee71acbe
commit 2c7f58aed2
4 files changed
+27 -14
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test/mip_test.c
+18 -7
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@@ -1,11 +1,11 @@
#define MG_ENABLE_TCPIP 1
#define MG_ENABLE_TCPIP_DRIVER_INIT 0
#include "mongoose.c" // order is important, this one first
#include "mongoose.c" // order is important, this one first
#include "driver_mock.c"
static int s_num_tests = 0;
static bool s_sent_fragment = 0;
static int s_sent_fragment = 0;
static int s_seg_sent = 0;
#ifdef NO_SLEEP_ABORT
@@ -25,6 +25,13 @@ static int s_seg_sent = 0;
} \
} while (0)
static void test_csum(void) {
uint8_t ip[20] = {0x45, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x00, 0x00, 0x28, 0x11,
0x94, 0xcf, 0x7f, 0x00, 0x00, 0x01, 0x7f, 0x00, 0x00, 0x01};
ASSERT(ipcsum(ip, 20) == 0);
// UDP and TCP checksum calc funcions use the same basic calls as ipcsum()
}
static void test_statechange(void) {
char tx[1540];
struct mg_tcpip_if iface;
@@ -47,8 +54,10 @@ static void fn(struct mg_connection *c, int ev, void *ev_data) {
static void frag_recv_fn(struct mg_connection *c, int ev, void *ev_data) {
if (ev == MG_EV_ERROR) {
if (s_sent_fragment) {
if (s_sent_fragment > 0) {
ASSERT(s_sent_fragment == 1);
ASSERT(strcmp((char *) ev_data, "Received fragmented packet") == 0);
s_sent_fragment = 2;
}
}
(void) c, (void) ev_data;
@@ -57,11 +66,11 @@ static void frag_recv_fn(struct mg_connection *c, int ev, void *ev_data) {
// mock send to a non-existent peer using the listener connection
static void frag_send_fn(struct mg_connection *c, int ev, void *ev_data) {
static bool s_sent;
static int s_seg_sizes[] = {416, 416, 368}; // based on len=1200 and MTU=500
static int s_seg_sizes[] = {416, 416, 368}; // based on len=1200 and MTU=500
if (ev == MG_EV_POLL) {
if (!s_sent) {
struct connstate *s = (struct connstate *) (c + 1);
s->dmss = 1500; // mock set some destination MSS way larger
s->dmss = 1500; // mock set some destination MSS way larger
c->send.len = 1200; // setting TCP payload size
s_sent = true;
}
@@ -284,8 +293,9 @@ static void test_frag_recv_path(void) {
ip.len = mg_htons(sizeof(struct ip) + sizeof(struct tcp) + 1000);
ip.frag |= IP_MORE_FRAGS_MSK; // setting More Fragments bit to 1
create_tcp_pkt(&e, &ip, 1001, 1, TH_PUSH | TH_ACK, 1000);
s_sent_fragment = true;
mg_mgr_poll(&mgr, 0);
s_sent_fragment = 1; // "enable" fn
mg_mgr_poll(&mgr, 0); // call it (process fake frag IP)
ASSERT(s_sent_fragment == 2); // check it followed the right path
s_driver_data.len = 0;
mg_mgr_free(&mgr);
@@ -320,6 +330,7 @@ static void test_fragmentation(void) {
}
int main(void) {
test_csum();
test_statechange();
test_poll();
test_retransmit();