IB/hfi1: Enhance PIO/SDMA send for 16B

PIO/SDMA send logic now uses the hdr_type field to determine
the type of packet that has been constructed. Based on the hdr_type,
certain things such as PBC flags, padding count and the LT extra
trailing bytes are determined.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/hfi.h

@@ -1558,7 +1558,7 @@ static const hfi1_handle_cnp hfi1_handle_cnp_tbl[2] = {
 	[HFI1_PKT_TYPE_16B] = &return_cnp_16B
 };
 #define PKEY_CHECK_INVALID -1
-int egress_pkey_check(struct hfi1_pportdata *ppd, __be16 *lrh, __be32 *bth,
+int egress_pkey_check(struct hfi1_pportdata *ppd, u32 slid, u16 pkey,
 		      u8 sc5, int8_t s_pkey_index);
 
 #define PACKET_EGRESS_TIMEOUT 350

drivers/infiniband/hw/hfi1/user_sdma.c

@@ -502,6 +502,8 @@ int hfi1_user_sdma_process_request(struct hfi1_filedata *fd,
 	struct sdma_req_info info;
 	struct user_sdma_request *req;
 	u8 opcode, sc, vl;
+	u16 pkey;
+	u32 slid;
 	int req_queued = 0;
 	u16 dlid;
 	u32 selector;
@@ -635,8 +637,9 @@ int hfi1_user_sdma_process_request(struct hfi1_filedata *fd,
 	}
 
 	/* Checking P_KEY for requests from user-space */
-	if (egress_pkey_check(dd->pport, req->hdr.lrh, req->hdr.bth, sc,
-			      PKEY_CHECK_INVALID)) {
+	pkey = (u16)be32_to_cpu(req->hdr.bth[0]);
+	slid = be16_to_cpu(req->hdr.lrh[3]);
+	if (egress_pkey_check(dd->pport, slid, pkey, sc, PKEY_CHECK_INVALID)) {
 		ret = -EINVAL;
 		goto free_req;
 	}

drivers/infiniband/hw/hfi1/verbs.h

@@ -163,6 +163,7 @@ struct hfi1_pkt_state {
 	unsigned long timeout;
 	unsigned long timeout_int;
 	int cpu;
+	u8 opcode;
 	bool in_thread;
 	bool pkts_sent;
 };