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Fix UDP payload pointer calculation: use correct struct size for udp header #96

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Fix UDP payload pointer calculation: use correct struct size for udp header #96

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6e249d9
Fix UDP payload pointer calculation: use correct struct size for udp …
Naseefabu Oct 11, 2025
593bfe1
repeat of the same
Naseefabu Oct 11, 2025
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6 changes: 3 additions & 3 deletions src/include/zf_internal/private/zf_stack_rx.h
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Original file line number Diff line number Diff line change
Expand Up @@ -383,7 +383,7 @@ zf_stack_handle_rx_udp(struct zf_stack* st, const char* iov_base,

st->pftf.w = &udp_rx->w;
st->pftf.frame_len = frame_len;
st->pftf.payload_len = tot_len - (ip->ihl*4) - sizeof(udp);
st->pftf.payload_len = tot_len - (ip->ihl*4) - sizeof(udphdr);
st->pftf.copied_payload = (char*) (udp + 1);
st->pftf.payload += (char*) (udp + 1) - iov_base;
zf_log_udp_rx_trace(udp_rx, "%s: PFTF %x data %p len %d\n", __func__,
Expand All @@ -398,9 +398,9 @@ zf_stack_handle_rx_udp(struct zf_stack* st, const char* iov_base,
if(ZF_UNLIKELY( rc < 0 ))
goto receive_error;

return __zf_stack_handle_rx_udp(st, udp_rx, ((char*)udp) + sizeof(udp),
return __zf_stack_handle_rx_udp(st, udp_rx, ((char*)udp) + sizeof(udphdr),
tot_len - (ip->ihl*4) -
sizeof(udp)) || rc;
sizeof(udphdr)) || rc;
}

/* No match. Wait for it to appear from the future if necessary before
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