From: Konstantin Ananyev Date: Thu, 31 Mar 2016 13:07:19 +0000 (+0100) Subject: examples/l3fwd: fix size of destination port ids X-Git-Tag: spdx-start~7112 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=8353a36a9b4b0766d4f3433fa6ad8fd41cb60bbc;p=dpdk.git examples/l3fwd: fix size of destination port ids Originally l3fwd used 16-bit value to store dest_port value. To accommodate 24-bit nexthop dest_port was increased to 32-bit, though some further packet processing code remained unchanged and still expects dest_port to be 16-bit. That is not correct and can cause l3fwd invalid behaviour or even process crash/hang on some input packet patterns. For the fix, I choose the simplest approach and restored dest_port as 16-bit value, plus necessary conversions from 32 to 16 bit values after lpm_lookupx4. Fixes: dc81ebbacaeb ("lpm: extend IPv4 next hop field") Signed-off-by: Konstantin Ananyev --- diff --git a/examples/l3fwd/l3fwd_em_hlm_sse.h b/examples/l3fwd/l3fwd_em_hlm_sse.h index ee0211f43b..5001c724c9 100644 --- a/examples/l3fwd/l3fwd_em_hlm_sse.h +++ b/examples/l3fwd/l3fwd_em_hlm_sse.h @@ -38,7 +38,7 @@ static inline __attribute__((always_inline)) void em_get_dst_port_ipv4x8(struct lcore_conf *qconf, struct rte_mbuf *m[8], - uint8_t portid, uint32_t dst_port[8]) + uint8_t portid, uint16_t dst_port[8]) { int32_t ret[8]; union ipv4_5tuple_host key[8]; @@ -162,7 +162,7 @@ get_ipv6_5tuple(struct rte_mbuf *m0, __m128i mask0, static inline __attribute__((always_inline)) void em_get_dst_port_ipv6x8(struct lcore_conf *qconf, struct rte_mbuf *m[8], - uint8_t portid, uint32_t dst_port[8]) + uint8_t portid, uint16_t dst_port[8]) { int32_t ret[8]; union ipv6_5tuple_host key[8]; @@ -289,7 +289,7 @@ l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst, uint8_t portid, struct lcore_conf *qconf) { int32_t j; - uint32_t dst_port[MAX_PKT_BURST]; + uint16_t dst_port[MAX_PKT_BURST]; /* * Send nb_rx - nb_rx%8 packets diff --git a/examples/l3fwd/l3fwd_em_sse.h b/examples/l3fwd/l3fwd_em_sse.h index e2fe932f09..c0a9725a6d 100644 --- a/examples/l3fwd/l3fwd_em_sse.h +++ b/examples/l3fwd/l3fwd_em_sse.h @@ -102,7 +102,7 @@ l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst, uint8_t portid, struct lcore_conf *qconf) { int32_t j; - uint32_t dst_port[MAX_PKT_BURST]; + uint16_t dst_port[MAX_PKT_BURST]; for (j = 0; j < nb_rx; j++) dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid); diff --git a/examples/l3fwd/l3fwd_lpm.h b/examples/l3fwd/l3fwd_lpm.h index fc102351c1..a43c50703f 100644 --- a/examples/l3fwd/l3fwd_lpm.h +++ b/examples/l3fwd/l3fwd_lpm.h @@ -34,14 +34,14 @@ #ifndef __L3FWD_LPM_H__ #define __L3FWD_LPM_H__ -static inline uint32_t +static inline uint8_t lpm_get_ipv4_dst_port(void *ipv4_hdr, uint8_t portid, void *lookup_struct) { uint32_t next_hop; struct rte_lpm *ipv4_l3fwd_lookup_struct = (struct rte_lpm *)lookup_struct; - return (uint32_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct, + return (uint8_t) ((rte_lpm_lookup(ipv4_l3fwd_lookup_struct, rte_be_to_cpu_32(((struct ipv4_hdr *)ipv4_hdr)->dst_addr), &next_hop) == 0) ? next_hop : portid); } diff --git a/examples/l3fwd/l3fwd_lpm_sse.h b/examples/l3fwd/l3fwd_lpm_sse.h index d64d6d2e77..538fe3d760 100644 --- a/examples/l3fwd/l3fwd_lpm_sse.h +++ b/examples/l3fwd/l3fwd_lpm_sse.h @@ -145,9 +145,9 @@ static inline void processx4_step2(const struct lcore_conf *qconf, __m128i dip, uint32_t ipv4_flag, - uint32_t portid, + uint8_t portid, struct rte_mbuf *pkt[FWDSTEP], - uint32_t dprt[FWDSTEP]) + uint16_t dprt[FWDSTEP]) { rte_xmm_t dst; const __m128i bswap_mask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, @@ -158,7 +158,11 @@ processx4_step2(const struct lcore_conf *qconf, /* if all 4 packets are IPV4. */ if (likely(ipv4_flag)) { - rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dprt, portid); + rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dst.u32, + portid); + /* get rid of unused upper 16 bit for each dport. */ + dst.x = _mm_packs_epi32(dst.x, dst.x); + *(uint64_t *)dprt = dst.u64[0]; } else { dst.x = dip; dprt[0] = lpm_get_dst_port_with_ipv4(qconf, pkt[0], dst.u32[0], portid); @@ -177,7 +181,7 @@ l3fwd_lpm_send_packets(int nb_rx, struct rte_mbuf **pkts_burst, uint8_t portid, struct lcore_conf *qconf) { int32_t j; - uint32_t dst_port[MAX_PKT_BURST]; + uint16_t dst_port[MAX_PKT_BURST]; __m128i dip[MAX_PKT_BURST / FWDSTEP]; uint32_t ipv4_flag[MAX_PKT_BURST / FWDSTEP]; const int32_t k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP); diff --git a/examples/l3fwd/l3fwd_sse.h b/examples/l3fwd/l3fwd_sse.h index 3d344d0bb2..f9cf50a0ff 100644 --- a/examples/l3fwd/l3fwd_sse.h +++ b/examples/l3fwd/l3fwd_sse.h @@ -58,7 +58,7 @@ * to BAD_PORT value. */ static inline __attribute__((always_inline)) void -rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint32_t *dp, uint32_t ptype) +rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint16_t *dp, uint32_t ptype) { uint8_t ihl; @@ -85,7 +85,7 @@ rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint32_t *dp, uint32_t ptype) * Perform RFC1812 checks and updates for IPV4 packets. */ static inline void -processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint32_t dst_port[FWDSTEP]) +processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP]) { __m128i te[FWDSTEP]; __m128i ve[FWDSTEP]; @@ -297,7 +297,7 @@ port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, __m128i dp1, __m128i dp2) * Perform RFC1812 checks and updates for IPV4 packets. */ static inline void -process_packet(struct rte_mbuf *pkt, uint32_t *dst_port) +process_packet(struct rte_mbuf *pkt, uint16_t *dst_port) { struct ether_hdr *eth_hdr; __m128i te, ve; @@ -397,7 +397,7 @@ send_packetsx4(struct lcore_conf *qconf, uint8_t port, struct rte_mbuf *m[], */ static inline __attribute__((always_inline)) void send_packets_multi(struct lcore_conf *qconf, struct rte_mbuf **pkts_burst, - uint32_t dst_port[MAX_PKT_BURST], int nb_rx) + uint16_t dst_port[MAX_PKT_BURST], int nb_rx) { int32_t k; int j = 0;