RDMA/cxgb4: Add Support for Chelsio T5 adapter
Adds support for Chelsio T5 adapter.
Enables T5's Write Combining feature.
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 565bfb1..272bf78 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -511,12 +511,16 @@
static int send_connect(struct c4iw_ep *ep)
{
struct cpl_act_open_req *req;
+ struct cpl_t5_act_open_req *t5_req;
struct sk_buff *skb;
u64 opt0;
u32 opt2;
unsigned int mtu_idx;
int wscale;
- int wrlen = roundup(sizeof *req, 16);
+ int size = is_t4(ep->com.dev->rdev.lldi.adapter_type) ?
+ sizeof(struct cpl_act_open_req) :
+ sizeof(struct cpl_t5_act_open_req);
+ int wrlen = roundup(size, 16);
PDBG("%s ep %p atid %u\n", __func__, ep, ep->atid);
@@ -552,17 +556,36 @@
opt2 |= WND_SCALE_EN(1);
t4_set_arp_err_handler(skb, NULL, act_open_req_arp_failure);
- req = (struct cpl_act_open_req *) skb_put(skb, wrlen);
- INIT_TP_WR(req, 0);
- OPCODE_TID(req) = cpu_to_be32(
- MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ((ep->rss_qid<<14)|ep->atid)));
- req->local_port = ep->com.local_addr.sin_port;
- req->peer_port = ep->com.remote_addr.sin_port;
- req->local_ip = ep->com.local_addr.sin_addr.s_addr;
- req->peer_ip = ep->com.remote_addr.sin_addr.s_addr;
- req->opt0 = cpu_to_be64(opt0);
- req->params = cpu_to_be32(select_ntuple(ep->com.dev, ep->dst, ep->l2t));
- req->opt2 = cpu_to_be32(opt2);
+ if (is_t4(ep->com.dev->rdev.lldi.adapter_type)) {
+ req = (struct cpl_act_open_req *) skb_put(skb, wrlen);
+ INIT_TP_WR(req, 0);
+ OPCODE_TID(req) = cpu_to_be32(
+ MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
+ ((ep->rss_qid << 14) | ep->atid)));
+ req->local_port = ep->com.local_addr.sin_port;
+ req->peer_port = ep->com.remote_addr.sin_port;
+ req->local_ip = ep->com.local_addr.sin_addr.s_addr;
+ req->peer_ip = ep->com.remote_addr.sin_addr.s_addr;
+ req->opt0 = cpu_to_be64(opt0);
+ req->params = cpu_to_be32(select_ntuple(ep->com.dev,
+ ep->dst, ep->l2t));
+ req->opt2 = cpu_to_be32(opt2);
+ } else {
+ t5_req = (struct cpl_t5_act_open_req *) skb_put(skb, wrlen);
+ INIT_TP_WR(t5_req, 0);
+ OPCODE_TID(t5_req) = cpu_to_be32(
+ MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
+ ((ep->rss_qid << 14) | ep->atid)));
+ t5_req->local_port = ep->com.local_addr.sin_port;
+ t5_req->peer_port = ep->com.remote_addr.sin_port;
+ t5_req->local_ip = ep->com.local_addr.sin_addr.s_addr;
+ t5_req->peer_ip = ep->com.remote_addr.sin_addr.s_addr;
+ t5_req->opt0 = cpu_to_be64(opt0);
+ t5_req->params = cpu_to_be64(V_FILTER_TUPLE(
+ select_ntuple(ep->com.dev, ep->dst, ep->l2t)));
+ t5_req->opt2 = cpu_to_be32(opt2);
+ }
+
set_bit(ACT_OPEN_REQ, &ep->com.history);
return c4iw_l2t_send(&ep->com.dev->rdev, skb, ep->l2t);
}
@@ -2869,12 +2892,14 @@
static void build_cpl_pass_accept_req(struct sk_buff *skb, int stid , u8 tos)
{
u32 l2info;
- u16 vlantag, len, hdr_len;
+ u16 vlantag, len, hdr_len, eth_hdr_len;
u8 intf;
struct cpl_rx_pkt *cpl = cplhdr(skb);
struct cpl_pass_accept_req *req;
struct tcp_options_received tmp_opt;
+ struct c4iw_dev *dev;
+ dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
/* Store values from cpl_rx_pkt in temporary location. */
vlantag = (__force u16) cpl->vlan;
len = (__force u16) cpl->len;
@@ -2898,14 +2923,16 @@
V_SYN_MAC_IDX(G_RX_MACIDX(
(__force int) htonl(l2info))) |
F_SYN_XACT_MATCH);
+ eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
+ G_RX_ETHHDR_LEN((__force int) htonl(l2info)) :
+ G_RX_T5_ETHHDR_LEN((__force int) htonl(l2info));
req->hdr_len = cpu_to_be32(V_SYN_RX_CHAN(G_RX_CHAN(
(__force int) htonl(l2info))) |
V_TCP_HDR_LEN(G_RX_TCPHDR_LEN(
(__force int) htons(hdr_len))) |
V_IP_HDR_LEN(G_RX_IPHDR_LEN(
(__force int) htons(hdr_len))) |
- V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(
- (__force int) htonl(l2info))));
+ V_ETH_HDR_LEN(G_RX_ETHHDR_LEN(eth_hdr_len)));
req->vlan = (__force __be16) vlantag;
req->len = (__force __be16) len;
req->tos_stid = cpu_to_be32(PASS_OPEN_TID(stid) |
@@ -2993,7 +3020,7 @@
u16 window;
struct port_info *pi;
struct net_device *pdev;
- u16 rss_qid;
+ u16 rss_qid, eth_hdr_len;
int step;
u32 tx_chan;
struct neighbour *neigh;
@@ -3022,7 +3049,10 @@
goto reject;
}
- if (G_RX_ETHHDR_LEN(ntohl(cpl->l2info)) == ETH_HLEN) {
+ eth_hdr_len = is_t4(dev->rdev.lldi.adapter_type) ?
+ G_RX_ETHHDR_LEN(htonl(cpl->l2info)) :
+ G_RX_T5_ETHHDR_LEN(htonl(cpl->l2info));
+ if (eth_hdr_len == ETH_HLEN) {
eh = (struct ethhdr *)(req + 1);
iph = (struct iphdr *)(eh + 1);
} else {