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account for extension headers in IPv6 transported protocols checksums

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Sergio R. Caprile committed 2026-09-01 21:33:48 -03:00
1 parent 3fde04137c
commit cd05b162a8
3 files changed
+50 -42
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test/mip_test.c
+8 -8
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@@ -57,7 +57,7 @@ static void test_csum(void) {
#if !MG_ENABLE_IPV6
#define udp6csum_ok(d, u) true
#define tcp6csum_ok(d, t) true
#define tcp6csum_ok(d, t, l) true
#endif
static bool executed = false;
@@ -269,7 +269,7 @@ static void create_tcp_seg(struct eth *e, struct ipp *ipp, uint32_t seq,
if (opts != NULL && opts_len)
memcpy(s_driver_data.buf + sizeof(*e) + sizeof(*ip) + sizeof(t), opts,
opts_len);
tcp->csum = p6csum(ip, tcp, (4 * (t.off >> 4) + payload_len));
tcp->csum = p6csum(ip, tcp, 6, (4 * (t.off >> 4) + payload_len));
s_driver_data.len =
sizeof(*e) + sizeof(*ip) + sizeof(t) + payload_len + opts_len;
} else
@@ -431,7 +431,7 @@ static void test_tcp_basics(bool ipv6) {
if (ipv6) {
ASSERT(i6->src[0] == mg_htonll(0x100000000000000) && i6->src[1] == 0 &&
i6->dst[0] == mg_htonll(0x200000000000000) && i6->dst[1] == 0);
ASSERT(tcp6csum_ok(i6, t));
ASSERT(tcp6csum_ok(i6, t, mg_ntohs(i6->plen)));
} else {
ASSERT(i->src == mg_htonl(0x1000000) && i->dst == mg_htonl(0x2000000));
ASSERT(tcpcsum_ok(i, t));
@@ -817,7 +817,7 @@ static void test_tcp_basics(bool ipv6) {
if (ipv6) {
ASSERT(i6->src[0] == mg_htonll(0x100000000000000) && i6->src[1] == 0 &&
i6->dst[0] == mg_htonll(0x200000000000000) && i6->dst[1] == 0);
ASSERT(tcp6csum_ok(i6, t));
ASSERT(tcp6csum_ok(i6, t, mg_ntohs(i6->plen)));
} else {
ASSERT(i->src == mg_htonl(0x1000000) && i->dst == mg_htonl(0x2000000));
ASSERT(tcpcsum_ok(i, t));
@@ -1281,7 +1281,7 @@ static void create_udp_dat(struct eth *e, struct ipp *ipp, uint16_t sport,
memcpy(s_driver_data.buf + sizeof(*e), ip, sizeof(*ip));
memcpy(udp, &u, sizeof(u));
*(s_driver_data.buf + sizeof(*e) + sizeof(*ip) + sizeof(u)) = 'p';
udp->csum = p6csum(ip, udp, (sizeof(u) + payload_len));
udp->csum = p6csum(ip, udp, 17, (sizeof(u) + payload_len));
s_driver_data.len = sizeof(*e) + sizeof(*ip) + sizeof(u) + payload_len;
} else
#endif
@@ -1458,7 +1458,7 @@ static void create_icmp6_dat(struct eth *e, struct ipp *ipp, uint8_t type,
memcpy(s_driver_data.buf, e, sizeof(*e));
memcpy(s_driver_data.buf + sizeof(*e), ip6, sizeof(*ip6));
memcpy(icmp6, &i6, sizeof(i6));
icmp6->csum = p6csum(ip6, icmp6, sizeof(*icmp6) + payload_len);
icmp6->csum = p6csum(ip6, icmp6, 58, sizeof(*icmp6) + payload_len);
s_driver_data.len = sizeof(*e) + sizeof(*ip6) + sizeof(*icmp6) + payload_len;
if (s_driver_data.len < 64) s_driver_data.len = 64; // add padding if needed
}
@@ -1494,7 +1494,7 @@ static void test_icmp6_basics(void) {
ASSERT(i->plen == mg_htons(sizeof(*icmp6) + 0));
ASSERT(icmp6->type == 129); // Echo Reply
ASSERT(icmp6->code == 0);
ASSERT(icmp6csum_ok(i, icmp6));
ASSERT(icmp6csum_ok(i, icmp6, mg_ntohs(i->plen)));
create_icmp6_dat(&e, &ipp, 128, 0, NULL, 69); // Echo Request
mg_mgr_poll(&mgr, 0); // make sure we clean former stuff in buffer
@@ -1505,7 +1505,7 @@ static void test_icmp6_basics(void) {
ASSERT(i->plen == mg_htons(sizeof(*icmp6) + 69));
ASSERT(icmp6->type == 129); // Echo Reply
ASSERT(icmp6->code == 0);
ASSERT(icmp6csum_ok(i, icmp6));
ASSERT(icmp6csum_ok(i, icmp6, mg_ntohs(i->plen)));
// Neighbor Solicitation
memset(payload, 0, sizeof(payload));