[2/2] app/testpmd: support GTP-U extension packet checksum offload
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Commit Message
To enable Tx side offload on GTP-U packets that contain extension header,
testpmd should set 'info->l2_len' correctly, this value should contain UDP
header length, GTP-U header length and GTP-U extension header length.
Signed-off-by: Murphy Yang <murphyx.yang@intel.com>
---
app/test-pmd/csumonly.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
@@ -218,14 +218,32 @@ parse_gtp(struct rte_udp_hdr *udp_hdr,
gtp_hdr = (struct rte_gtp_hdr *)((char *)udp_hdr +
sizeof(struct rte_udp_hdr));
+ /* Calculate the gtp_len*/
+ if (gtp_hdr->gtp_hdr_info & 0x7)
+ gtp_len = gtp_len + 4;
+
+ if (gtp_hdr->gtp_hdr_info & 0x4) {
+ /*Assuming one extension gtp header*/
+ uint16_t gtp_extension_len = 0;
+ uint8_t *gtp_extension_hdr = NULL;
+ uint8_t gtp_NEHT = 0;
+ do {
+ gtp_extension_hdr = (uint8_t *)((uint8_t *)gtp_hdr +
+ gtp_len);
+ gtp_extension_len = *gtp_extension_hdr * 4;
+ gtp_len = gtp_len + gtp_extension_len;
+ gtp_NEHT = *(gtp_extension_hdr +
+ gtp_extension_len - 1);
+ } while (gtp_NEHT);
+ }
+
/*
* Check message type. If message type is 0xff, it is
* a GTP data packet. If not, it is a GTP control packet
*/
if (gtp_hdr->msg_type == 0xff) {
ip_ver = *(uint8_t *)((char *)udp_hdr +
- sizeof(struct rte_udp_hdr) +
- sizeof(struct rte_gtp_hdr));
+ sizeof(struct rte_udp_hdr) + gtp_len);
ip_ver = (ip_ver) & 0xf0;
if (ip_ver == RTE_GTP_TYPE_IPV4) {
@@ -233,20 +251,22 @@ parse_gtp(struct rte_udp_hdr *udp_hdr,
gtp_len);
info->ethertype = _htons(RTE_ETHER_TYPE_IPV4);
parse_ipv4(ipv4_hdr, info);
+ info->l2_len = (uint8_t *)ipv4_hdr - (uint8_t *)udp_hdr;
} else if (ip_ver == RTE_GTP_TYPE_IPV6) {
ipv6_hdr = (struct rte_ipv6_hdr *)((char *)gtp_hdr +
gtp_len);
info->ethertype = _htons(RTE_ETHER_TYPE_IPV6);
parse_ipv6(ipv6_hdr, info);
+ info->l2_len = (uint8_t *)ipv6_hdr - (uint8_t *)udp_hdr;
}
} else {
info->ethertype = 0;
info->l4_len = 0;
info->l3_len = 0;
info->l4_proto = 0;
+ info->l2_len += RTE_ETHER_GTP_HLEN;
}
- info->l2_len += RTE_ETHER_GTP_HLEN;
}
/* Parse a vxlan header */