diff options
| author |   dlg <dlg@openbsd.org> | 2007-08-15 05:34:08 +0000 |
|---|---|---|
| committer | dlg <dlg@openbsd.org> | 2007-08-15 05:34:08 +0000 |
| commit | a96cdd3d2cf770e0d03df52300b9eb7f397f4cb5 (patch) | |
| tree | 39ad3b831bcb5372b3f6eccec972c201bebb8385 | |
| parent | move the firmware to the right state before we start allocating everything (diff) | |
| download | wireguard-openbsd-a96cdd3d2cf770e0d03df52300b9eb7f397f4cb5.tar.xz wireguard-openbsd-a96cdd3d2cf770e0d03df52300b9eb7f397f4cb5.zip | |
here are the tx, rx, and status (rx completion) descriptors used in the io
paths.
| -rw-r--r-- | sys/dev/pci/if_nxe.c | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/sys/dev/pci/if_nxe.c b/sys/dev/pci/if_nxe.c index d1417965aa8..2b103f7a516 100644 --- a/sys/dev/pci/if_nxe.c +++ b/sys/dev/pci/if_nxe.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_nxe.c,v 1.31 2007/08/15 05:23:47 dlg Exp $ */ +/* $OpenBSD: if_nxe.c,v 1.32 2007/08/15 05:34:08 dlg Exp $ */ /* * Copyright (c) 2007 David Gwynne <dlg@openbsd.org> @@ -530,6 +530,84 @@ struct nxe_userinfo { u_int32_t nu_bios_ver; } __packed; +/* hw structures actually used in the io path */ + +struct nxe_ctx_ring { + u_int64_t r_addr; + u_int32_t r_size; + u_int32_t r_reserved; +}; + +#define NXE_RING_RX 0 +#define NXE_RING_RX_JUMBO 1 +#define NXE_RING_RX_LRO 2 +#define NXE_NRING 3 + +struct nxe_ctx { + u_int64_t ctx_cmd_consumer_addr; + + struct nxe_ctx_ring ctx_cmd_ring; + + struct nxe_ctx_ring ctx_rx_rings[NXE_NRING]; + + u_int64_t ctx_status_ring_addr; + u_int32_t ctx_status_ring_size; + + u_int32_t ctx_id; +} __packed; + +struct nxe_tx_desc { + u_int8_t tx_tcp_offset; + u_int8_t tx_ip_offset; + u_int16_t tx_flags; +#define NXE_TXD_F_OPCODE_TX (0x01 << 7) + + u_int8_t tx_nbufs; + u_int16_t tx_length; /* XXX who makes a 24bit field? */ + u_int8_t tx_length_hi; + + u_int64_t tx_addr_2; + + u_int16_t tx_id; + u_int16_t tx_mss; + + u_int8_t tx_port; + u_int8_t tx_tso_hdr_len; + u_int16_t tx_ipsec_id; + + u_int64_t tx_addr_3; + + u_int64_t tx_addr_1; + + u_int16_t tx_slen_1; + u_int16_t tx_slen_2; + u_int16_t tx_slen_3; + u_int16_t tx_slen_4; + + u_int64_t tx_addr_4; + + u_int64_t tx_reserved; +} __packed; +#define NXE_TXD_SEGS 4 +#define NXE_TXD_DESCS 8 +#define NXE_TXD_MAX_SEGS (NXE_TXD_SEGS * NXE_TXD_DESCS) + +struct nxe_rx_desc { + u_int16_t rx_id; + u_int16_t rx_flags; + u_int32_t rx_len; /* packet length */ + u_int64_t rx_addr; +} __packed; +#define NXE_RXD_MAX_SEGS 1 + +struct nxe_status_desc { + u_int8_t st_lro; + u_int8_t st_owner; + u_int16_t st_id; + u_int16_t st_len; + u_int16_t st_flags; +} __packed; + /* * driver definitions */ |