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Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
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@ -405,6 +405,9 @@ HISTORY
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++ Bug fixes:
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++ Bug fixes:
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2007-09-19 Simon Goldschmidt
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* icmp.c: Fixed bug #21107 (didn't reset IP TTL in ICMP echo replies)
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2007-09-06 Frédéric Bernon
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2007-09-06 Frédéric Bernon
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* several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
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* several-files: replace some #include "arch/cc.h" by "lwip/arch.h", or simply remove
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it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
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it as long as "lwip/opt.h" is included before (this one include "lwip/debug.h" which
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@ -163,6 +163,14 @@ icmp_input(struct pbuf *p, struct netif *inp)
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} else {
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} else {
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iecho->chksum += htons(ICMP_ECHO << 8);
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iecho->chksum += htons(ICMP_ECHO << 8);
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}
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}
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/* Set the correct TTL and recalculate the header checksum. */
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IPH_TTL_SET(iphdr, ICMP_TTL);
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IPH_CHKSUM_SET(iphdr, 0);
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#if CHECKSUM_GEN_IP
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IPH_CHKSUM_SET(iphdr, inet_chksum(iphdr, IP_HLEN));
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#endif /* CHECKSUM_GEN_IP */
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ICMP_STATS_INC(icmp.xmit);
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ICMP_STATS_INC(icmp.xmit);
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/* increase number of messages attempted to send */
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/* increase number of messages attempted to send */
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snmp_inc_icmpoutmsgs();
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snmp_inc_icmpoutmsgs();
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