diff options
Diffstat (limited to 'sys/ofed/drivers/net/mlx4/en_frag.c')
| -rw-r--r-- | sys/ofed/drivers/net/mlx4/en_frag.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/sys/ofed/drivers/net/mlx4/en_frag.c b/sys/ofed/drivers/net/mlx4/en_frag.c deleted file mode 100644 index c8429e4..0000000 --- a/sys/ofed/drivers/net/mlx4/en_frag.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - * Copyright (c) 2007 Mellanox Technologies. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - * - */ - -#include "opt_inet.h" -#include "mlx4_en.h" - -#ifdef INET - -#include <net/ethernet.h> -#include <netinet/ip.h> -#include <machine/in_cksum.h> - -static struct mlx4_en_ipfrag *find_session(struct mlx4_en_rx_ring *ring, - struct ip *iph) -{ - struct mlx4_en_ipfrag *session; - int i; - - for (i = 0; i < MLX4_EN_NUM_IPFRAG_SESSIONS; i++) { - session = &ring->ipfrag[i]; - if (session->fragments == NULL) - continue; - if (session->daddr == iph->ip_dst.s_addr && - session->saddr == iph->ip_src.s_addr && - session->id == iph->ip_id && - session->protocol == iph->ip_p) { - return session; - } - } - return NULL; -} - -static struct mlx4_en_ipfrag *start_session(struct mlx4_en_rx_ring *ring, - struct ip *iph) -{ - struct mlx4_en_ipfrag *session; - int index = -1; - int i; - - for (i = 0; i < MLX4_EN_NUM_IPFRAG_SESSIONS; i++) { - if (ring->ipfrag[i].fragments == NULL) { - index = i; - break; - } - } - if (index < 0) - return NULL; - - session = &ring->ipfrag[index]; - - return session; -} - - -static void flush_session(struct mlx4_en_priv *priv, - struct mlx4_en_ipfrag *session, - u16 more) -{ - struct mbuf *mb = session->fragments; - struct ip *iph = mb->m_pkthdr.PH_loc.ptr; - struct net_device *dev = mb->m_pkthdr.rcvif; - - /* Update IP length and checksum */ - iph->ip_len = htons(session->total_len); - iph->ip_off = htons(more | (session->offset >> 3)); - iph->ip_sum = 0; - iph->ip_sum = in_cksum_skip(mb, iph->ip_hl * 4, - (char *)iph - mb->m_data); - - dev->if_input(dev, mb); - session->fragments = NULL; - session->last = NULL; -} - - -static inline void frag_append(struct mlx4_en_priv *priv, - struct mlx4_en_ipfrag *session, - struct mbuf *mb, - unsigned int data_len) -{ - struct mbuf *parent = session->fragments; - - /* Update mb bookkeeping */ - parent->m_pkthdr.len += data_len; - session->total_len += data_len; - - m_adj(mb, mb->m_pkthdr.len - data_len); - - session->last->m_next = mb; - for (; mb->m_next != NULL; mb = mb->m_next); - session->last = mb; -} - -int mlx4_en_rx_frags(struct mlx4_en_priv *priv, struct mlx4_en_rx_ring *ring, - struct mbuf *mb, struct mlx4_cqe *cqe) -{ - struct mlx4_en_ipfrag *session; - struct ip *iph; - u16 ip_len; - u16 ip_hlen; - int data_len; - u16 offset; - - iph = (struct ip *)(mtod(mb, char *) + ETHER_HDR_LEN); - mb->m_pkthdr.PH_loc.ptr = iph; - ip_len = ntohs(iph->ip_len); - ip_hlen = iph->ip_hl * 4; - data_len = ip_len - ip_hlen; - offset = ntohs(iph->ip_off); - offset &= IP_OFFMASK; - offset <<= 3; - - session = find_session(ring, iph); - if (unlikely(in_cksum_skip(mb, ip_hlen, (char *)iph - mb->m_data))) { - if (session) - flush_session(priv, session, IP_MF); - return -EINVAL; - } - if (session) { - if (unlikely(session->offset + session->total_len != - offset + ip_hlen || - session->total_len + mb->m_pkthdr.len > 65536)) { - flush_session(priv, session, IP_MF); - goto new_session; - } - frag_append(priv, session, mb, data_len); - } else { -new_session: - session = start_session(ring, iph); - if (unlikely(!session)) - return -ENOSPC; - - session->fragments = mb; - session->daddr = iph->ip_dst.s_addr; - session->saddr = iph->ip_src.s_addr; - session->id = iph->ip_id; - session->protocol = iph->ip_p; - session->total_len = ip_len; - session->offset = offset; - for (; mb->m_next != NULL; mb = mb->m_next); - session->last = mb; - } - if (!(ntohs(iph->ip_off) & IP_MF)) - flush_session(priv, session, 0); - - return 0; -} - - -void mlx4_en_flush_frags(struct mlx4_en_priv *priv, - struct mlx4_en_rx_ring *ring) -{ - struct mlx4_en_ipfrag *session; - int i; - - for (i = 0; i < MLX4_EN_NUM_IPFRAG_SESSIONS; i++) { - session = &ring->ipfrag[i]; - if (session->fragments) - flush_session(priv, session, IP_MF); - } -} -#endif |
