diff options
Diffstat (limited to 'usr/src/uts/common/io/i40e')
| -rw-r--r-- | usr/src/uts/common/io/i40e/i40e_transceiver.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/usr/src/uts/common/io/i40e/i40e_transceiver.c b/usr/src/uts/common/io/i40e/i40e_transceiver.c index caafa3e102..9662cb58f5 100644 --- a/usr/src/uts/common/io/i40e/i40e_transceiver.c +++ b/usr/src/uts/common/io/i40e/i40e_transceiver.c @@ -1663,186 +1663,6 @@ i40e_ring_rx_poll(void *arg, int poll_bytes) } /* - * This is a structure I wish someone would fill out for me for dorking with the - * checksums. When we get some more experience with this, we should go ahead and - * consider adding this to MAC. - */ -typedef enum mac_ether_offload_flags { - MEOI_L2INFO_SET = 0x01, - MEOI_VLAN_TAGGED = 0x02, - MEOI_L3INFO_SET = 0x04, - MEOI_L3CKSUM_SET = 0x08, - MEOI_L4INFO_SET = 0x10, - MEOI_L4CKSUM_SET = 0x20 -} mac_ether_offload_flags_t; - -typedef struct mac_ether_offload_info { - mac_ether_offload_flags_t meoi_flags; - uint8_t meoi_l2hlen; /* How long is the Ethernet header? */ - uint16_t meoi_l3proto; /* What's the Ethertype */ - uint8_t meoi_l3hlen; /* How long is the header? */ - uint8_t meoi_l4proto; /* What is the payload type? */ - uint8_t meoi_l4hlen; /* How long is the L4 header */ - mblk_t *meoi_l3ckmp; /* Which mblk has the l3 checksum */ - off_t meoi_l3ckoff; /* What's the offset to it */ - mblk_t *meoi_l4ckmp; /* Which mblk has the L4 checksum */ - off_t meoi_l4off; /* What is the offset to it? */ -} mac_ether_offload_info_t; - -/* - * This is something that we'd like to make a general MAC function. Before we do - * that, we should add support for TSO. - * - * We should really keep track of our offset and not walk everything every - * time. I can't imagine that this will be kind to us at high packet rates; - * however, for the moment, let's leave that. - * - * This walks a message block chain without pulling up to fill in the context - * information. Note that the data we care about could be hidden across more - * than one mblk_t. - */ -static int -i40e_meoi_get_uint8(mblk_t *mp, off_t off, uint8_t *out) -{ - size_t mpsize; - uint8_t *bp; - - mpsize = msgsize(mp); - /* Check for overflow */ - if (off + sizeof (uint16_t) > mpsize) - return (-1); - - mpsize = MBLKL(mp); - while (off >= mpsize) { - mp = mp->b_cont; - off -= mpsize; - mpsize = MBLKL(mp); - } - - bp = mp->b_rptr + off; - *out = *bp; - return (0); - -} - -static int -i40e_meoi_get_uint16(mblk_t *mp, off_t off, uint16_t *out) -{ - size_t mpsize; - uint8_t *bp; - - mpsize = msgsize(mp); - /* Check for overflow */ - if (off + sizeof (uint16_t) > mpsize) - return (-1); - - mpsize = MBLKL(mp); - while (off >= mpsize) { - mp = mp->b_cont; - off -= mpsize; - mpsize = MBLKL(mp); - } - - /* - * Data is in network order. Note the second byte of data might be in - * the next mp. - */ - bp = mp->b_rptr + off; - *out = *bp << 8; - if (off + 1 == mpsize) { - mp = mp->b_cont; - bp = mp->b_rptr; - } else { - bp++; - } - - *out |= *bp; - return (0); - -} - -static int -mac_ether_offload_info(mblk_t *mp, mac_ether_offload_info_t *meoi) -{ - size_t off; - uint16_t ether; - uint8_t ipproto, iplen, l4len, maclen; - - bzero(meoi, sizeof (mac_ether_offload_info_t)); - - off = offsetof(struct ether_header, ether_type); - if (i40e_meoi_get_uint16(mp, off, ðer) != 0) - return (-1); - - if (ether == ETHERTYPE_VLAN) { - off = offsetof(struct ether_vlan_header, ether_type); - if (i40e_meoi_get_uint16(mp, off, ðer) != 0) - return (-1); - meoi->meoi_flags |= MEOI_VLAN_TAGGED; - maclen = sizeof (struct ether_vlan_header); - } else { - maclen = sizeof (struct ether_header); - } - meoi->meoi_flags |= MEOI_L2INFO_SET; - meoi->meoi_l2hlen = maclen; - meoi->meoi_l3proto = ether; - - switch (ether) { - case ETHERTYPE_IP: - /* - * For IPv4 we need to get the length of the header, as it can - * be variable. - */ - off = offsetof(ipha_t, ipha_version_and_hdr_length) + maclen; - if (i40e_meoi_get_uint8(mp, off, &iplen) != 0) - return (-1); - iplen &= 0x0f; - if (iplen < 5 || iplen > 0x0f) - return (-1); - iplen *= 4; - off = offsetof(ipha_t, ipha_protocol) + maclen; - if (i40e_meoi_get_uint8(mp, off, &ipproto) == -1) - return (-1); - break; - case ETHERTYPE_IPV6: - iplen = 40; - off = offsetof(ip6_t, ip6_nxt) + maclen; - if (i40e_meoi_get_uint8(mp, off, &ipproto) == -1) - return (-1); - break; - default: - return (0); - } - meoi->meoi_l3hlen = iplen; - meoi->meoi_l4proto = ipproto; - meoi->meoi_flags |= MEOI_L3INFO_SET; - - switch (ipproto) { - case IPPROTO_TCP: - off = offsetof(tcph_t, th_offset_and_rsrvd) + maclen + iplen; - if (i40e_meoi_get_uint8(mp, off, &l4len) == -1) - return (-1); - l4len = (l4len & 0xf0) >> 4; - if (l4len < 5 || l4len > 0xf) - return (-1); - l4len *= 4; - break; - case IPPROTO_UDP: - l4len = sizeof (struct udphdr); - break; - case IPPROTO_SCTP: - l4len = sizeof (sctp_hdr_t); - break; - default: - return (0); - } - - meoi->meoi_l4hlen = l4len; - meoi->meoi_flags |= MEOI_L4INFO_SET; - return (0); -} - -/* * Attempt to put togther the information we'll need to feed into a descriptor * to properly program the hardware for checksum offload as well as the * generally required flags. |