From: Dmitry Eremin-Solenikov <dmitry.ereminsoleni...@linaro.org> IPsec packet postprocessing needs parsing of packets which guarantee only L3/L4 headers. Separate parsing function doing L3/L4 headers parsing.
Signed-off-by: Dmitry Eremin-Solenikov <dmitry.ereminsoleni...@linaro.org> --- /** Email created from pull request 81 (lumag:ipsec-packet-impl-2) ** https://github.com/Linaro/odp/pull/81 ** Patch: https://github.com/Linaro/odp/pull/81.patch ** Base sha: 91c0b58fc87ba0431241818758cea94438cd5498 ** Merge commit sha: 3ec7da960bd3d497e998f18cb30a2480296e7b6d **/ .../linux-generic/include/odp_packet_internal.h | 6 ++ platform/linux-generic/odp_packet.c | 85 ++++++++++++++-------- 2 files changed, 62 insertions(+), 29 deletions(-) diff --git a/platform/linux-generic/include/odp_packet_internal.h b/platform/linux-generic/include/odp_packet_internal.h index 91fba1ea..1f215d7d 100644 --- a/platform/linux-generic/include/odp_packet_internal.h +++ b/platform/linux-generic/include/odp_packet_internal.h @@ -356,6 +356,12 @@ int packet_alloc_multi(odp_pool_t pool_hdl, uint32_t len, int packet_parse_layer(odp_packet_hdr_t *pkt_hdr, odp_pktio_parser_layer_t layer); +/* Perform L3 and L4 parsing up to a given protocol layer */ +int packet_parse_l3_l4(odp_packet_hdr_t *pkt_hdr, + odp_pktio_parser_layer_t layer, + uint32_t l3_offset, + uint16_t ethtype); + /* Reset parser metadata for a new parse */ void packet_parse_reset(odp_packet_hdr_t *pkt_hdr); diff --git a/platform/linux-generic/odp_packet.c b/platform/linux-generic/odp_packet.c index 2038f60d..1292d33e 100644 --- a/platform/linux-generic/odp_packet.c +++ b/platform/linux-generic/odp_packet.c @@ -262,7 +262,7 @@ void packet_parse_reset(odp_packet_hdr_t *pkt_hdr) pkt_hdr->p.error_flags.all = 0; pkt_hdr->p.input_flags.all = 0; pkt_hdr->p.output_flags.all = 0; - pkt_hdr->p.l2_offset = 0; + pkt_hdr->p.l2_offset = ODP_PACKET_OFFSET_INVALID; pkt_hdr->p.l3_offset = ODP_PACKET_OFFSET_INVALID; pkt_hdr->p.l4_offset = ODP_PACKET_OFFSET_INVALID; @@ -2332,37 +2332,15 @@ static inline void parse_udp(packet_parser_t *prs, *parseptr += sizeof(_odp_udphdr_t); } -/** - * Parse common packet headers up to given layer - * - * The function expects at least PACKET_PARSE_SEG_LEN bytes of data to be - * available from the ptr. - */ -int packet_parse_common(packet_parser_t *prs, const uint8_t *ptr, - uint32_t frame_len, uint32_t seg_len, - odp_pktio_parser_layer_t layer) +static inline +int packet_parse_common_l3_l4(packet_parser_t *prs, const uint8_t *parseptr, + uint32_t offset, + uint32_t frame_len, uint32_t seg_len, + odp_pktio_parser_layer_t layer, + uint16_t ethtype) { - uint32_t offset; - uint16_t ethtype; - const uint8_t *parseptr; uint8_t ip_proto; - parseptr = ptr; - offset = 0; - - if (layer == ODP_PKTIO_PARSER_LAYER_NONE) - return 0; - - /* We only support Ethernet for now */ - prs->input_flags.eth = 1; - /* Assume valid L2 header, no CRC/FCS check in SW */ - prs->input_flags.l2 = 1; - - ethtype = parse_eth(prs, &parseptr, &offset, frame_len); - - if (layer == ODP_PKTIO_PARSER_LAYER_L2) - return prs->error_flags.all != 0; - /* Set l3_offset+flag only for known ethtypes */ prs->l3_offset = offset; prs->input_flags.l3 = 1; @@ -2445,6 +2423,42 @@ int packet_parse_common(packet_parser_t *prs, const uint8_t *ptr, } /** + * Parse common packet headers up to given layer + * + * The function expects at least PACKET_PARSE_SEG_LEN bytes of data to be + * available from the ptr. + */ +int packet_parse_common(packet_parser_t *prs, const uint8_t *ptr, + uint32_t frame_len, uint32_t seg_len, + odp_pktio_parser_layer_t layer) +{ + uint32_t offset; + uint16_t ethtype; + const uint8_t *parseptr; + + parseptr = ptr; + offset = 0; + + if (layer == ODP_PKTIO_PARSER_LAYER_NONE) + return 0; + + /* Assume valid L2 header, no CRC/FCS check in SW */ + prs->l2_offset = offset; + prs->input_flags.l2 = 1; + /* We only support Ethernet for now */ + prs->input_flags.eth = 1; + + ethtype = parse_eth(prs, &parseptr, &offset, frame_len); + + if (layer == ODP_PKTIO_PARSER_LAYER_L2) + return prs->error_flags.all != 0; + + + return packet_parse_common_l3_l4(prs, parseptr, offset, frame_len, + seg_len, layer, ethtype); +} + +/** * Simple packet parser */ int packet_parse_layer(odp_packet_hdr_t *pkt_hdr, @@ -2457,6 +2471,19 @@ int packet_parse_layer(odp_packet_hdr_t *pkt_hdr, seg_len, layer); } +int packet_parse_l3_l4(odp_packet_hdr_t *pkt_hdr, + odp_pktio_parser_layer_t layer, + uint32_t l3_offset, + uint16_t ethtype) +{ + uint32_t seg_len = 0; + void *base = packet_map(pkt_hdr, l3_offset, &seg_len, NULL); + + return packet_parse_common_l3_l4(&pkt_hdr->p, base, l3_offset, + pkt_hdr->frame_len, seg_len, + layer, ethtype); +} + uint64_t odp_packet_to_u64(odp_packet_t hdl) { return _odp_pri(hdl);
