[PATCH net-next 1/4] octeontx2-pf: Add ip tos and ip proto icmp/icmpv6 flow offload support
From: Naveen Mamindlapalli <hidden>
Date: 2021-03-18 10:03:16
Subsystem:
marvell octeontx2 physical function driver, marvell octeontx2 rvu admin function driver, networking drivers, the rest · Maintainers:
Sunil Goutham, Geetha sowjanya, Ratheesh Kannoth, Subbaraya Sundeep, Bharat Bhushan, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add support for programming the HW MCAM match key with IP tos, IP(v6) proto icmp/icmpv6, allowing flow offload rules to be installed using those fields. The NPC HW extracts layer type, which will be used as a matching criteria for different IP protocols. The ethtool n-tuple filter logic has been updated to parse the IP tos and l4proto for HW offloading. l4proto tcp/udp/sctp/ah/esp/icmp are supported. See example usage below. Ex: Redirect l4proto icmp to vf 0 queue 0 ethtool -U eth0 flow-type ip4 l4proto 1 action vf 0 queue 0 Ex: Redirect flow with ip tos 8 to vf 0 queue 0 ethtool -U eth0 flow-type ip4 tos 8 vf 0 queue 0 Signed-off-by: Naveen Mamindlapalli <redacted> --- drivers/net/ethernet/marvell/octeontx2/af/npc.h | 2 ++ .../net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c | 17 +++++++-- .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 42 ++++++++++++++++++++-- 3 files changed, 57 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
index 0675c55dcc7a..1e012e787260 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/npc.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/npc.h@@ -167,6 +167,8 @@ enum key_fields { NPC_IPPROTO_SCTP, NPC_IPPROTO_AH, NPC_IPPROTO_ESP, + NPC_IPPROTO_ICMP, + NPC_IPPROTO_ICMP6, NPC_SPORT_TCP, NPC_DPORT_TCP, NPC_SPORT_UDP,
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index d805a189a268..7f35b62eea13 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c@@ -29,6 +29,8 @@ static const char * const npc_flow_names[] = { [NPC_IPPROTO_TCP] = "ip proto tcp", [NPC_IPPROTO_UDP] = "ip proto udp", [NPC_IPPROTO_SCTP] = "ip proto sctp", + [NPC_IPPROTO_ICMP] = "ip proto icmp", + [NPC_IPPROTO_ICMP6] = "ip proto icmp6", [NPC_IPPROTO_AH] = "ip proto AH", [NPC_IPPROTO_ESP] = "ip proto ESP", [NPC_SPORT_TCP] = "tcp source port",
@@ -427,6 +429,7 @@ do { \ * packet header fields below. * Example: Source IP is 4 bytes and starts at 12th byte of IP header */ + NPC_SCAN_HDR(NPC_TOS, NPC_LID_LC, NPC_LT_LC_IP, 1, 1); NPC_SCAN_HDR(NPC_SIP_IPV4, NPC_LID_LC, NPC_LT_LC_IP, 12, 4); NPC_SCAN_HDR(NPC_DIP_IPV4, NPC_LID_LC, NPC_LT_LC_IP, 16, 4); NPC_SCAN_HDR(NPC_SIP_IPV6, NPC_LID_LC, NPC_LT_LC_IP6, 8, 16);
@@ -477,9 +480,12 @@ static void npc_set_features(struct rvu *rvu, int blkaddr, u8 intf) BIT_ULL(NPC_IPPROTO_SCTP); } - /* for AH, check if corresponding layer type is present in the key */ - if (npc_check_field(rvu, blkaddr, NPC_LD, intf)) + /* for AH/ICMP/ICMPv6/, check if corresponding layer type is present in the key */ + if (npc_check_field(rvu, blkaddr, NPC_LD, intf)) { *features |= BIT_ULL(NPC_IPPROTO_AH); + *features |= BIT_ULL(NPC_IPPROTO_ICMP); + *features |= BIT_ULL(NPC_IPPROTO_ICMP6); + } /* for ESP, check if corresponding layer type is present in the key */ if (npc_check_field(rvu, blkaddr, NPC_LE, intf))
@@ -769,6 +775,12 @@ static void npc_update_flow(struct rvu *rvu, struct mcam_entry *entry, if (features & BIT_ULL(NPC_IPPROTO_SCTP)) npc_update_entry(rvu, NPC_LD, entry, NPC_LT_LD_SCTP, 0, ~0ULL, 0, intf); + if (features & BIT_ULL(NPC_IPPROTO_ICMP)) + npc_update_entry(rvu, NPC_LD, entry, NPC_LT_LD_ICMP, + 0, ~0ULL, 0, intf); + if (features & BIT_ULL(NPC_IPPROTO_ICMP6)) + npc_update_entry(rvu, NPC_LD, entry, NPC_LT_LD_ICMP6, + 0, ~0ULL, 0, intf); if (features & BIT_ULL(NPC_OUTER_VID)) npc_update_entry(rvu, NPC_LB, entry,
@@ -798,6 +810,7 @@ do { \ NPC_WRITE_FLOW(NPC_SMAC, smac, smac_val, 0, smac_mask, 0); NPC_WRITE_FLOW(NPC_ETYPE, etype, ntohs(pkt->etype), 0, ntohs(mask->etype), 0); + NPC_WRITE_FLOW(NPC_TOS, tos, pkt->tos, 0, mask->tos, 0); NPC_WRITE_FLOW(NPC_SIP_IPV4, ip4src, ntohl(pkt->ip4src), 0, ntohl(mask->ip4src), 0); NPC_WRITE_FLOW(NPC_DIP_IPV4, ip4dst, ntohl(pkt->ip4dst), 0,
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
index 0dbbf38e0597..3264cb793f02 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c@@ -301,6 +301,35 @@ static int otx2_prepare_ipv4_flow(struct ethtool_rx_flow_spec *fsp, sizeof(pmask->ip4dst)); req->features |= BIT_ULL(NPC_DIP_IPV4); } + if (ipv4_usr_mask->tos) { + pkt->tos = ipv4_usr_hdr->tos; + pmask->tos = ipv4_usr_mask->tos; + req->features |= BIT_ULL(NPC_TOS); + } + if (ipv4_usr_mask->proto) { + switch (ipv4_usr_hdr->proto) { + case IPPROTO_ICMP: + req->features |= BIT_ULL(NPC_IPPROTO_ICMP); + break; + case IPPROTO_TCP: + req->features |= BIT_ULL(NPC_IPPROTO_TCP); + break; + case IPPROTO_UDP: + req->features |= BIT_ULL(NPC_IPPROTO_UDP); + break; + case IPPROTO_SCTP: + req->features |= BIT_ULL(NPC_IPPROTO_SCTP); + break; + case IPPROTO_AH: + req->features |= BIT_ULL(NPC_IPPROTO_AH); + break; + case IPPROTO_ESP: + req->features |= BIT_ULL(NPC_IPPROTO_ESP); + break; + default: + return -EOPNOTSUPP; + } + } pkt->etype = cpu_to_be16(ETH_P_IP); pmask->etype = cpu_to_be16(0xFFFF); req->features |= BIT_ULL(NPC_ETYPE);
@@ -325,6 +354,11 @@ static int otx2_prepare_ipv4_flow(struct ethtool_rx_flow_spec *fsp, sizeof(pmask->ip4dst)); req->features |= BIT_ULL(NPC_DIP_IPV4); } + if (ipv4_l4_mask->tos) { + pkt->tos = ipv4_l4_hdr->tos; + pmask->tos = ipv4_l4_mask->tos; + req->features |= BIT_ULL(NPC_TOS); + } if (ipv4_l4_mask->psrc) { memcpy(&pkt->sport, &ipv4_l4_hdr->psrc, sizeof(pkt->sport));
@@ -375,10 +409,14 @@ static int otx2_prepare_ipv4_flow(struct ethtool_rx_flow_spec *fsp, sizeof(pmask->ip4dst)); req->features |= BIT_ULL(NPC_DIP_IPV4); } + if (ah_esp_mask->tos) { + pkt->tos = ah_esp_hdr->tos; + pmask->tos = ah_esp_mask->tos; + req->features |= BIT_ULL(NPC_TOS); + } /* NPC profile doesn't extract AH/ESP header fields */ - if ((ah_esp_mask->spi & ah_esp_hdr->spi) || - (ah_esp_mask->tos & ah_esp_mask->tos)) + if (ah_esp_mask->spi & ah_esp_hdr->spi) return -EOPNOTSUPP; if (flow_type == AH_V4_FLOW)
--
2.16.5