diff options
Diffstat (limited to 'drivers/net/ethernet/amazon/ena/ena_eth_com.c')
| -rw-r--r-- | drivers/net/ethernet/amazon/ena/ena_eth_com.c | 51 |
1 files changed, 36 insertions, 15 deletions
diff --git a/drivers/net/ethernet/amazon/ena/ena_eth_com.c b/drivers/net/ethernet/amazon/ena/ena_eth_com.c index ec8ea25e988d..ccd440589565 100644 --- a/drivers/net/ethernet/amazon/ena/ena_eth_com.c +++ b/drivers/net/ethernet/amazon/ena/ena_eth_com.c @@ -285,11 +285,10 @@ static u16 ena_com_cdesc_rx_pkt_get(struct ena_com_io_cq *io_cq, return count; } -static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq, - struct ena_com_tx_ctx *ena_tx_ctx) +static int ena_com_create_meta(struct ena_com_io_sq *io_sq, + struct ena_com_tx_meta *ena_meta) { struct ena_eth_io_tx_meta_desc *meta_desc = NULL; - struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta; meta_desc = get_sq_desc(io_sq); memset(meta_desc, 0x0, sizeof(struct ena_eth_io_tx_meta_desc)); @@ -309,12 +308,13 @@ static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq, /* Extended meta desc */ meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_ETH_META_TYPE_MASK; - meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK; meta_desc->len_ctrl |= (io_sq->phase << ENA_ETH_IO_TX_META_DESC_PHASE_SHIFT) & ENA_ETH_IO_TX_META_DESC_PHASE_MASK; meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_FIRST_MASK; + meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK; + meta_desc->word2 |= ena_meta->l3_hdr_len & ENA_ETH_IO_TX_META_DESC_L3_HDR_LEN_MASK; meta_desc->word2 |= (ena_meta->l3_hdr_offset << @@ -325,13 +325,36 @@ static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq, ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_SHIFT) & ENA_ETH_IO_TX_META_DESC_L4_HDR_LEN_IN_WORDS_MASK; - meta_desc->len_ctrl |= ENA_ETH_IO_TX_META_DESC_META_STORE_MASK; + return ena_com_sq_update_tail(io_sq); +} + +static int ena_com_create_and_store_tx_meta_desc(struct ena_com_io_sq *io_sq, + struct ena_com_tx_ctx *ena_tx_ctx, + bool *have_meta) +{ + struct ena_com_tx_meta *ena_meta = &ena_tx_ctx->ena_meta; - /* Cached the meta desc */ - memcpy(&io_sq->cached_tx_meta, ena_meta, - sizeof(struct ena_com_tx_meta)); + /* When disable meta caching is set, don't bother to save the meta and + * compare it to the stored version, just create the meta + */ + if (io_sq->disable_meta_caching) { + if (unlikely(!ena_tx_ctx->meta_valid)) + return -EINVAL; - return ena_com_sq_update_tail(io_sq); + *have_meta = true; + return ena_com_create_meta(io_sq, ena_meta); + } + + if (ena_com_meta_desc_changed(io_sq, ena_tx_ctx)) { + *have_meta = true; + /* Cache the meta desc */ + memcpy(&io_sq->cached_tx_meta, ena_meta, + sizeof(struct ena_com_tx_meta)); + return ena_com_create_meta(io_sq, ena_meta); + } + + *have_meta = false; + return 0; } static void ena_com_rx_set_flags(struct ena_com_rx_ctx *ena_rx_ctx, @@ -402,12 +425,10 @@ int ena_com_prepare_tx(struct ena_com_io_sq *io_sq, if (unlikely(rc)) return rc; - have_meta = ena_tx_ctx->meta_valid && ena_com_meta_desc_changed(io_sq, - ena_tx_ctx); - if (have_meta) { - rc = ena_com_create_and_store_tx_meta_desc(io_sq, ena_tx_ctx); - if (unlikely(rc)) - return rc; + rc = ena_com_create_and_store_tx_meta_desc(io_sq, ena_tx_ctx, &have_meta); + if (unlikely(rc)) { + pr_err("failed to create and store tx meta desc\n"); + return rc; } /* If the caller doesn't want to send packets */ |