diff options
| author | Michal Kalderon <Michal.Kalderon@cavium.com> | 2017-10-09 12:37:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-09 10:21:26 -0700 |
| commit | 469981b17a4f8ddac91837bd74ebc98578f2ddbf (patch) | |
| tree | 444e8ddd9f7a2fd4db04e68600c86dcecb3e3994 /drivers/net/ethernet/qlogic/qed/qed_iwarp.h | |
| parent | fcb39f6c10b24d2d16d4c2bdb4c256bc21b8a131 (diff) | |
| download | linux-469981b17a4f8ddac91837bd74ebc98578f2ddbf.tar.bz2 | |
qed: Add unaligned and packed packet processing
The fpdu data structure is preallocated per connection.
Each connection stores the current status of the connection:
either nothing pending, or there is a partial fpdu that is waiting for
the rest of the fpdu (incomplete bytes != 0).
The same structure is also used for splitting a packet when there are
packed fpdus. The structure is initialized with all data required
for sending the fpdu back to the FW. A fpdu will always be spanned across
a maximum of 3 tx bds. One for the header, one for the partial fdpu
received and one for the remainder (unaligned) packet.
In case of packed fpdu's, two fragments are used, one for the header
and one for the data.
Corner cases are not handled in the patch for clarity, and will be added
as a separate patch.
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_iwarp.h')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h index 2c53fe46345c..858755cafd2b 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -68,6 +68,17 @@ struct qed_iwarp_ll2_mpa_buf { u8 placement_offset; }; +struct qed_iwarp_fpdu { + struct qed_iwarp_ll2_buff *mpa_buf; + void *mpa_frag_virt; + dma_addr_t mpa_frag; + dma_addr_t pkt_hdr; + u16 mpa_frag_len; + u16 fpdu_length; + u16 incomplete_bytes; + u8 pkt_hdr_size; +}; + struct qed_iwarp_info { struct list_head listen_list; /* qed_iwarp_listener */ struct list_head ep_list; /* qed_iwarp_ep */ @@ -87,7 +98,9 @@ struct qed_iwarp_info { u8 peer2peer; enum mpa_negotiation_mode mpa_rev; enum mpa_rtr_type rtr_type; + struct qed_iwarp_fpdu *partial_fpdus; struct qed_iwarp_ll2_mpa_buf *mpa_bufs; + u16 max_num_partial_fpdus; }; enum qed_iwarp_ep_state { |