From 1d63c314b74087794b513ee7bdb19e08581ffbb6 Mon Sep 17 00:00:00 2001 From: Andriy Berestovskyy Date: Tue, 8 Dec 2015 15:47:03 +0100 Subject: [PATCH] bonding: fix reordering of IP fragments Fragmented IPv4 packets have no TCP/UDP headers, so we hashed random data introducing reordering of the fragments. Signed-off-by: Andriy Berestovskyy Acked-by: Declan Doherty --- drivers/net/bonding/rte_eth_bond_pmd.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) diff --git a/drivers/net/bonding/rte_eth_bond_pmd.c b/drivers/net/bonding/rte_eth_bond_pmd.c index 8f84ec1f33..b1373c6e1e 100644 --- a/drivers/net/bonding/rte_eth_bond_pmd.c +++ b/drivers/net/bonding/rte_eth_bond_pmd.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include @@ -552,17 +553,20 @@ xmit_l34_hash(const struct rte_mbuf *buf, uint8_t slave_count) l3hash = ipv4_hash(ipv4_hdr); - ip_hdr_offset = (ipv4_hdr->version_ihl & IPV4_HDR_IHL_MASK) * - IPV4_IHL_MULTIPLIER; - - if (ipv4_hdr->next_proto_id == IPPROTO_TCP) { - tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + - ip_hdr_offset); - l4hash = HASH_L4_PORTS(tcp_hdr); - } else if (ipv4_hdr->next_proto_id == IPPROTO_UDP) { - udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr + - ip_hdr_offset); - l4hash = HASH_L4_PORTS(udp_hdr); + /* there is no L4 header in fragmented packet */ + if (likely(rte_ipv4_frag_pkt_is_fragmented(ipv4_hdr) == 0)) { + ip_hdr_offset = (ipv4_hdr->version_ihl & IPV4_HDR_IHL_MASK) * + IPV4_IHL_MULTIPLIER; + + if (ipv4_hdr->next_proto_id == IPPROTO_TCP) { + tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + + ip_hdr_offset); + l4hash = HASH_L4_PORTS(tcp_hdr); + } else if (ipv4_hdr->next_proto_id == IPPROTO_UDP) { + udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr + + ip_hdr_offset); + l4hash = HASH_L4_PORTS(udp_hdr); + } } } else if (rte_cpu_to_be_16(ETHER_TYPE_IPv6) == proto) { struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *) -- 2.20.1