Date: Sat, 6 Jul 2013 09:08:17 +0000 (UTC) From: Michael Tuexen <tuexen@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r252880 - stable/9/sys/netinet Message-ID: <201307060908.r6698H3L096119@svn.freebsd.org>
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Author: tuexen Date: Sat Jul 6 09:08:17 2013 New Revision: 252880 URL: http://svnweb.freebsd.org/changeset/base/252880 Log: MFC r237541: Remove redundant check. Modified: stable/9/sys/netinet/sctp_input.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/netinet/sctp_input.c ============================================================================== --- stable/9/sys/netinet/sctp_input.c Sat Jul 6 09:04:55 2013 (r252879) +++ stable/9/sys/netinet/sctp_input.c Sat Jul 6 09:08:17 2013 (r252880) @@ -2392,7 +2392,7 @@ sctp_handle_cookie_echo(struct mbuf *m, uint8_t calc_sig[SCTP_SIGNATURE_SIZE], tmp_sig[SCTP_SIGNATURE_SIZE]; uint8_t *sig; uint8_t cookie_ok = 0; - unsigned int size_of_pkt, sig_offset, cookie_offset; + unsigned int sig_offset, cookie_offset; unsigned int cookie_len; struct timeval now; struct timeval time_expires; @@ -2434,7 +2434,6 @@ sctp_handle_cookie_echo(struct mbuf *m, lsin->sin_len = sizeof(*lsin); lsin->sin_port = sh->dest_port; lsin->sin_addr.s_addr = iph->ip_dst.s_addr; - size_of_pkt = SCTP_GET_IPV4_LENGTH(iph); break; } #endif @@ -2452,7 +2451,6 @@ sctp_handle_cookie_echo(struct mbuf *m, ip6 = mtod(m, struct ip6_hdr *); lsin6->sin6_port = sh->dest_port; lsin6->sin6_addr = ip6->ip6_dst; - size_of_pkt = SCTP_GET_IPV6_LENGTH(ip6) + iphlen; break; } #endif @@ -2476,11 +2474,10 @@ sctp_handle_cookie_echo(struct mbuf *m, */ return (NULL); } - if (cookie_len > size_of_pkt || - cookie_len < sizeof(struct sctp_cookie_echo_chunk) + + if (cookie_len < sizeof(struct sctp_cookie_echo_chunk) + sizeof(struct sctp_init_chunk) + sizeof(struct sctp_init_ack_chunk) + SCTP_SIGNATURE_SIZE) { - /* cookie too long! or too small */ + /* cookie too small */ return (NULL); } /* @@ -2488,11 +2485,6 @@ sctp_handle_cookie_echo(struct mbuf *m, * calculated in the sctp_hmac_m() call). */ sig_offset = offset + cookie_len - SCTP_SIGNATURE_SIZE; - if (sig_offset > size_of_pkt) { - /* packet not correct size! */ - /* XXX this may already be accounted for earlier... */ - return (NULL); - } m_sig = m_split(m, sig_offset, M_DONTWAIT); if (m_sig == NULL) { /* out of memory or ?? */
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