diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/verbs.c')
-rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 32 |
1 files changed, 8 insertions, 24 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index e232f3c608b4..a985a224cdf9 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -146,6 +146,9 @@ static int pio_wait(struct rvt_qp *qp, /* Length of buffer to create verbs txreq cache name */ #define TXREQ_NAME_LEN 24 +/* 16B trailing buffer */ +static const u8 trail_buf[MAX_16B_PADDING]; + static uint wss_threshold; module_param(wss_threshold, uint, S_IRUGO); MODULE_PARM_DESC(wss_threshold, "Percentage (1-100) of LLC to use as a threshold for a cacheless copy"); @@ -812,9 +815,7 @@ static int build_verbs_tx_desc( int ret = 0; struct hfi1_sdma_header *phdr = &tx->phdr; u16 hdrbytes = tx->hdr_dwords << 2; - u32 *hdr; u8 extra_bytes = 0; - static char trail_buf[12]; /* CRC = 4, LT = 1, Pad = 0 to 7 bytes */ if (tx->phdr.hdr.hdr_type) { /* @@ -823,9 +824,6 @@ static int build_verbs_tx_desc( */ extra_bytes = hfi1_get_16b_padding(hdrbytes - 8, length) + (SIZE_OF_CRC << 2) + SIZE_OF_LT; - hdr = (u32 *)&phdr->hdr.opah; - } else { - hdr = (u32 *)&phdr->hdr.ibh; } if (!ahg_info->ahgcount) { ret = sdma_txinit_ahg( @@ -869,9 +867,9 @@ static int build_verbs_tx_desc( } /* add icrc, lt byte, and padding to flit */ - if (extra_bytes != 0) + if (extra_bytes) ret = sdma_txadd_kvaddr(sde->dd, &tx->txreq, - trail_buf, extra_bytes); + (void *)trail_buf, extra_bytes); bail_txadd: return ret; @@ -891,14 +889,12 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps, u8 sc5 = priv->s_sc; int ret; u32 dwords; - bool bypass = false; if (ps->s_txreq->phdr.hdr.hdr_type) { u8 extra_bytes = hfi1_get_16b_padding((hdrwords << 2), len); dwords = (len + extra_bytes + (SIZE_OF_CRC << 2) + SIZE_OF_LT) >> 2; - bypass = true; } else { dwords = (len + 3) >> 2; } @@ -1033,8 +1029,6 @@ int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, int wc_status = IB_WC_SUCCESS; int ret = 0; pio_release_cb cb = NULL; - u32 lrh0_16b; - bool bypass = false; u8 extra_bytes = 0; if (ps->s_txreq->phdr.hdr.hdr_type) { @@ -1043,8 +1037,6 @@ int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, extra_bytes = pad_size + (SIZE_OF_CRC << 2) + SIZE_OF_LT; dwords = (len + extra_bytes) >> 2; hdr = (u32 *)&ps->s_txreq->phdr.hdr.opah; - lrh0_16b = ps->s_txreq->phdr.hdr.opah.lrh[0]; - bypass = true; } else { dwords = (len + 3) >> 2; hdr = (u32 *)&ps->s_txreq->phdr.hdr.ibh; @@ -1128,18 +1120,10 @@ int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, len -= slen; } } - /* - * Bypass packet will need to copy additional - * bytes to accommodate for CRC and LT bytes - */ - if (extra_bytes) { - u8 *empty_buf; + /* add icrc, lt byte, and padding to flit */ + if (extra_bytes) + seg_pio_copy_mid(pbuf, trail_buf, extra_bytes); - empty_buf = kcalloc(extra_bytes, sizeof(u8), - GFP_KERNEL); - seg_pio_copy_mid(pbuf, empty_buf, extra_bytes); - kfree(empty_buf); - } seg_pio_copy_end(pbuf); } |