diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/af_bluetooth.c | 6 | ||||
| -rw-r--r-- | net/bluetooth/hci_core.c | 4 | ||||
| -rw-r--r-- | net/bluetooth/hci_sock.c | 12 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/Makefile | 2 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/core.c | 43 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/crc.c | 71 | ||||
| -rw-r--r-- | net/core/dev.c | 14 | ||||
| -rw-r--r-- | net/core/ethtool.c | 53 | ||||
| -rw-r--r-- | net/core/skbuff.c | 75 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 83 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 71 | ||||
| -rw-r--r-- | net/ipv6/mcast.c | 2 |
12 files changed, 343 insertions, 93 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index 12b43345b54..03532062a46 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -308,12 +308,6 @@ static struct net_proto_family bt_sock_family_ops = { .create = bt_sock_create, }; -extern int hci_sock_init(void); -extern int hci_sock_cleanup(void); - -extern int bt_sysfs_init(void); -extern int bt_sysfs_cleanup(void); - static int __init bt_init(void) { BT_INFO("Core ver %s", VERSION); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 55dc42eac92..cf0df1c8c93 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -87,7 +87,7 @@ int hci_unregister_notifier(struct notifier_block *nb) return notifier_chain_unregister(&hci_notifier, nb); } -void hci_notify(struct hci_dev *hdev, int event) +static void hci_notify(struct hci_dev *hdev, int event) { notifier_call_chain(&hci_notifier, event, hdev); } @@ -1347,7 +1347,7 @@ static inline void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) kfree_skb(skb); } -void hci_rx_task(unsigned long arg) +static void hci_rx_task(unsigned long arg) { struct hci_dev *hdev = (struct hci_dev *) arg; struct sk_buff *skb; diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 32ef7975a13..799e448750a 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -66,20 +66,20 @@ static struct hci_sec_filter hci_sec_filter = { /* Packet types */ 0x10, /* Events */ - { 0x1000d9fe, 0x0000300c }, + { 0x1000d9fe, 0x0000b00c }, /* Commands */ { { 0x0 }, /* OGF_LINK_CTL */ - { 0xbe000006, 0x00000001, 0x0000, 0x00 }, + { 0xbe000006, 0x00000001, 0x000000, 0x00 }, /* OGF_LINK_POLICY */ - { 0x00005200, 0x00000000, 0x0000, 0x00 }, + { 0x00005200, 0x00000000, 0x000000, 0x00 }, /* OGF_HOST_CTL */ - { 0xaab00200, 0x2b402aaa, 0x0154, 0x00 }, + { 0xaab00200, 0x2b402aaa, 0x020154, 0x00 }, /* OGF_INFO_PARAM */ - { 0x000002be, 0x00000000, 0x0000, 0x00 }, + { 0x000002be, 0x00000000, 0x000000, 0x00 }, /* OGF_STATUS_PARAM */ - { 0x000000ea, 0x00000000, 0x0000, 0x00 } + { 0x000000ea, 0x00000000, 0x000000, 0x00 } } }; diff --git a/net/bluetooth/rfcomm/Makefile b/net/bluetooth/rfcomm/Makefile index aecec45ec68..fe07988a370 100644 --- a/net/bluetooth/rfcomm/Makefile +++ b/net/bluetooth/rfcomm/Makefile @@ -4,5 +4,5 @@ obj-$(CONFIG_BT_RFCOMM) += rfcomm.o -rfcomm-y := core.o sock.o crc.o +rfcomm-y := core.o sock.o rfcomm-$(CONFIG_BT_RFCOMM_TTY) += tty.o diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c index 35adce6482b..c3d56ead840 100644 --- a/net/bluetooth/rfcomm/core.c +++ b/net/bluetooth/rfcomm/core.c @@ -133,6 +133,49 @@ static inline void rfcomm_session_put(struct rfcomm_session *s) /* ---- RFCOMM FCS computation ---- */ +/* reversed, 8-bit, poly=0x07 */ +static unsigned char rfcomm_crc_table[256] = { + 0x00, 0x91, 0xe3, 0x72, 0x07, 0x96, 0xe4, 0x75, + 0x0e, 0x9f, 0xed, 0x7c, 0x09, 0x98, 0xea, 0x7b, + 0x1c, 0x8d, 0xff, 0x6e, 0x1b, 0x8a, 0xf8, 0x69, + 0x12, 0x83, 0xf1, 0x60, 0x15, 0x84, 0xf6, 0x67, + + 0x38, 0xa9, 0xdb, 0x4a, 0x3f, 0xae, 0xdc, 0x4d, + 0x36, 0xa7, 0xd5, 0x44, 0x31, 0xa0, 0xd2, 0x43, + 0x24, 0xb5, 0xc7, 0x56, 0x23, 0xb2, 0xc0, 0x51, + 0x2a, 0xbb, 0xc9, 0x58, 0x2d, 0xbc, 0xce, 0x5f, + + 0x70, 0xe1, 0x93, 0x02, 0x77, 0xe6, 0x94, 0x05, + 0x7e, 0xef, 0x9d, 0x0c, 0x79, 0xe8, 0x9a, 0x0b, + 0x6c, 0xfd, 0x8f, 0x1e, 0x6b, 0xfa, 0x88, 0x19, + 0x62, 0xf3, 0x81, 0x10, 0x65, 0xf4, 0x86, 0x17, + + 0x48, 0xd9, 0xab, 0x3a, 0x4f, 0xde, 0xac, 0x3d, + 0x46, 0xd7, 0xa5, 0x34, 0x41, 0xd0, 0xa2, 0x33, + 0x54, 0xc5, 0xb7, 0x26, 0x53, 0xc2, 0xb0, 0x21, + 0x5a, 0xcb, 0xb9, 0x28, 0x5d, 0xcc, 0xbe, 0x2f, + + 0xe0, 0x71, 0x03, 0x92, 0xe7, 0x76, 0x04, 0x95, + 0xee, 0x7f, 0x0d, 0x9c, 0xe9, 0x78, 0x0a, 0x9b, + 0xfc, 0x6d, 0x1f, 0x8e, 0xfb, 0x6a, 0x18, 0x89, + 0xf2, 0x63, 0x11, 0x80, 0xf5, 0x64, 0x16, 0x87, + + 0xd8, 0x49, 0x3b, 0xaa, 0xdf, 0x4e, 0x3c, 0xad, + 0xd6, 0x47, 0x35, 0xa4, 0xd1, 0x40, 0x32, 0xa3, + 0xc4, 0x55, 0x27, 0xb6, 0xc3, 0x52, 0x20, 0xb1, + 0xca, 0x5b, 0x29, 0xb8, 0xcd, 0x5c, 0x2e, 0xbf, + + 0x90, 0x01, 0x73, 0xe2, 0x97, 0x06, 0x74, 0xe5, + 0x9e, 0x0f, 0x7d, 0xec, 0x99, 0x08, 0x7a, 0xeb, + 0x8c, 0x1d, 0x6f, 0xfe, 0x8b, 0x1a, 0x68, 0xf9, + 0x82, 0x13, 0x61, 0xf0, 0x85, 0x14, 0x66, 0xf7, + + 0xa8, 0x39, 0x4b, 0xda, 0xaf, 0x3e, 0x4c, 0xdd, + 0xa6, 0x37, 0x45, 0xd4, 0xa1, 0x30, 0x42, 0xd3, + 0xb4, 0x25, 0x57, 0xc6, 0xb3, 0x22, 0x50, 0xc1, + 0xba, 0x2b, 0x59, 0xc8, 0xbd, 0x2c, 0x5e, 0xcf +}; + /* CRC on 2 bytes */ #define __crc(data) (rfcomm_crc_table[rfcomm_crc_table[0xff ^ data[0]] ^ data[1]]) diff --git a/net/bluetooth/rfcomm/crc.c b/net/bluetooth/rfcomm/crc.c deleted file mode 100644 index 1011bc4a869..00000000000 --- a/net/bluetooth/rfcomm/crc.c +++ /dev/null @@ -1,71 +0,0 @@ -/* - RFCOMM implementation for Linux Bluetooth stack (BlueZ). - Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> - Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License version 2 as - published by the Free Software Foundation; - - 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 OF THIRD PARTY RIGHTS. - IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY - CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES - WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - - ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, - COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS - SOFTWARE IS DISCLAIMED. -*/ - -/* - * RFCOMM FCS calculation. - * - * $Id: crc.c,v 1.2 2002/09/21 09:54:32 holtmann Exp $ - */ - -/* reversed, 8-bit, poly=0x07 */ -unsigned char rfcomm_crc_table[256] = { - 0x00, 0x91, 0xe3, 0x72, 0x07, 0x96, 0xe4, 0x75, - 0x0e, 0x9f, 0xed, 0x7c, 0x09, 0x98, 0xea, 0x7b, - 0x1c, 0x8d, 0xff, 0x6e, 0x1b, 0x8a, 0xf8, 0x69, - 0x12, 0x83, 0xf1, 0x60, 0x15, 0x84, 0xf6, 0x67, - - 0x38, 0xa9, 0xdb, 0x4a, 0x3f, 0xae, 0xdc, 0x4d, - 0x36, 0xa7, 0xd5, 0x44, 0x31, 0xa0, 0xd2, 0x43, - 0x24, 0xb5, 0xc7, 0x56, 0x23, 0xb2, 0xc0, 0x51, - 0x2a, 0xbb, 0xc9, 0x58, 0x2d, 0xbc, 0xce, 0x5f, - - 0x70, 0xe1, 0x93, 0x02, 0x77, 0xe6, 0x94, 0x05, - 0x7e, 0xef, 0x9d, 0x0c, 0x79, 0xe8, 0x9a, 0x0b, - 0x6c, 0xfd, 0x8f, 0x1e, 0x6b, 0xfa, 0x88, 0x19, - 0x62, 0xf3, 0x81, 0x10, 0x65, 0xf4, 0x86, 0x17, - - 0x48, 0xd9, 0xab, 0x3a, 0x4f, 0xde, 0xac, 0x3d, - 0x46, 0xd7, 0xa5, 0x34, 0x41, 0xd0, 0xa2, 0x33, - 0x54, 0xc5, 0xb7, 0x26, 0x53, 0xc2, 0xb0, 0x21, - 0x5a, 0xcb, 0xb9, 0x28, 0x5d, 0xcc, 0xbe, 0x2f, - - 0xe0, 0x71, 0x03, 0x92, 0xe7, 0x76, 0x04, 0x95, - 0xee, 0x7f, 0x0d, 0x9c, 0xe9, 0x78, 0x0a, 0x9b, - 0xfc, 0x6d, 0x1f, 0x8e, 0xfb, 0x6a, 0x18, 0x89, - 0xf2, 0x63, 0x11, 0x80, 0xf5, 0x64, 0x16, 0x87, - - 0xd8, 0x49, 0x3b, 0xaa, 0xdf, 0x4e, 0x3c, 0xad, - 0xd6, 0x47, 0x35, 0xa4, 0xd1, 0x40, 0x32, 0xa3, - 0xc4, 0x55, 0x27, 0xb6, 0xc3, 0x52, 0x20, 0xb1, - 0xca, 0x5b, 0x29, 0xb8, 0xcd, 0x5c, 0x2e, 0xbf, - - 0x90, 0x01, 0x73, 0xe2, 0x97, 0x06, 0x74, 0xe5, - 0x9e, 0x0f, 0x7d, 0xec, 0x99, 0x08, 0x7a, 0xeb, - 0x8c, 0x1d, 0x6f, 0xfe, 0x8b, 0x1a, 0x68, 0xf9, - 0x82, 0x13, 0x61, 0xf0, 0x85, 0x14, 0x66, 0xf7, - - 0xa8, 0x39, 0x4b, 0xda, 0xaf, 0x3e, 0x4c, 0xdd, - 0xa6, 0x37, 0x45, 0xd4, 0xa1, 0x30, 0x42, 0xd3, - 0xb4, 0x25, 0x57, 0xc6, 0xb3, 0x22, 0x50, 0xc1, - 0xba, 0x2b, 0x59, 0xc8, 0xbd, 0x2c, 0x5e, 0xcf -}; diff --git a/net/core/dev.c b/net/core/dev.c index a44eeef24ed..8d154159527 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2717,6 +2717,20 @@ int register_netdevice(struct net_device *dev) dev->name); dev->features &= ~NETIF_F_TSO; } + if (dev->features & NETIF_F_UFO) { + if (!(dev->features & NETIF_F_HW_CSUM)) { + printk(KERN_ERR "%s: Dropping NETIF_F_UFO since no " + "NETIF_F_HW_CSUM feature.\n", + dev->name); + dev->features &= ~NETIF_F_UFO; + } + if (!(dev->features & NETIF_F_SG)) { + printk(KERN_ERR "%s: Dropping NETIF_F_UFO since no " + "NETIF_F_SG feature.\n", + dev->name); + dev->features &= ~NETIF_F_UFO; + } + } /* * nil rebuild_header routine, diff --git a/net/core/ethtool.c b/net/core/ethtool.c index 404b761e82c..0350586e919 100644 --- a/net/core/ethtool.c +++ b/net/core/ethtool.c @@ -93,6 +93,20 @@ int ethtool_op_get_perm_addr(struct net_device *dev, struct ethtool_perm_addr *a } +u32 ethtool_op_get_ufo(struct net_device *dev) +{ + return (dev->features & NETIF_F_UFO) != 0; +} + +int ethtool_op_set_ufo(struct net_device *dev, u32 data) +{ + if (data) + dev->features |= NETIF_F_UFO; + else + dev->features &= ~NETIF_F_UFO; + return 0; +} + /* Handlers for each ethtool command */ static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) @@ -483,6 +497,11 @@ static int __ethtool_set_sg(struct net_device *dev, u32 data) return err; } + if (!data && dev->ethtool_ops->set_ufo) { + err = dev->ethtool_ops->set_ufo(dev, 0); + if (err) + return err; + } return dev->ethtool_ops->set_sg(dev, data); } @@ -569,6 +588,32 @@ static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) return dev->ethtool_ops->set_tso(dev, edata.data); } +static int ethtool_get_ufo(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_value edata = { ETHTOOL_GTSO }; + + if (!dev->ethtool_ops->get_ufo) + return -EOPNOTSUPP; + edata.data = dev->ethtool_ops->get_ufo(dev); + if (copy_to_user(useraddr, &edata, sizeof(edata))) + return -EFAULT; + return 0; +} +static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) +{ + struct ethtool_value edata; + + if (!dev->ethtool_ops->set_ufo) + return -EOPNOTSUPP; + if (copy_from_user(&edata, useraddr, sizeof(edata))) + return -EFAULT; + if (edata.data && !(dev->features & NETIF_F_SG)) + return -EINVAL; + if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) + return -EINVAL; + return dev->ethtool_ops->set_ufo(dev, edata.data); +} + static int ethtool_self_test(struct net_device *dev, char __user *useraddr) { struct ethtool_test test; @@ -854,6 +899,12 @@ int dev_ethtool(struct ifreq *ifr) case ETHTOOL_GPERMADDR: rc = ethtool_get_perm_addr(dev, useraddr); break; + case ETHTOOL_GUFO: + rc = ethtool_get_ufo(dev, useraddr); + break; + case ETHTOOL_SUFO: + rc = ethtool_set_ufo(dev, useraddr); + break; default: rc = -EOPNOTSUPP; } @@ -882,3 +933,5 @@ EXPORT_SYMBOL(ethtool_op_set_sg); EXPORT_SYMBOL(ethtool_op_set_tso); EXPORT_SYMBOL(ethtool_op_set_tx_csum); EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); +EXPORT_SYMBOL(ethtool_op_set_ufo); +EXPORT_SYMBOL(ethtool_op_get_ufo); diff --git a/net/core/skbuff.c b/net/core/skbuff.c index ef9d46b91eb..95501e40100 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -176,6 +176,8 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, skb_shinfo(skb)->tso_size = 0; skb_shinfo(skb)->tso_segs = 0; skb_shinfo(skb)->frag_list = NULL; + skb_shinfo(skb)->ufo_size = 0; + skb_shinfo(skb)->ip6_frag_id = 0; out: return skb; nodata: @@ -1696,6 +1698,78 @@ unsigned int skb_find_text(struct sk_buff *skb, unsigned int from, return textsearch_find(config, state); } +/** + * skb_append_datato_frags: - append the user data to a skb + * @sk: sock structure + * @skb: skb structure to be appened with user data. + * @getfrag: call back function to be used for getting the user data + * @from: pointer to user message iov + * @length: length of the iov message + * + * Description: This procedure append the user data in the fragment part + * of the skb if any page alloc fails user this procedure returns -ENOMEM + */ +int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb, + int getfrag(void *from, char *to, int offset, + int len, int odd, struct sk_buff *skb), + void *from, int length) +{ + int frg_cnt = 0; + skb_frag_t *frag = NULL; + struct page *page = NULL; + int copy, left; + int offset = 0; + int ret; + + do { + /* Return error if we don't have space for new frag */ + frg_cnt = skb_shinfo(skb)->nr_frags; + if (frg_cnt >= MAX_SKB_FRAGS) + return -EFAULT; + + /* allocate a new page for next frag */ + page = alloc_pages(sk->sk_allocation, 0); + + /* If alloc_page fails just return failure and caller will + * free previous allocated pages by doing kfree_skb() + */ + if (page == NULL) + return -ENOMEM; + + /* initialize the next frag */ + sk->sk_sndmsg_page = page; + sk->sk_sndmsg_off = 0; + skb_fill_page_desc(skb, frg_cnt, page, 0, 0); + skb->truesize += PAGE_SIZE; + atomic_add(PAGE_SIZE, &sk->sk_wmem_alloc); + + /* get the new initialized frag */ + frg_cnt = skb_shinfo(skb)->nr_frags; + frag = &skb_shinfo(skb)->frags[frg_cnt - 1]; + + /* copy the user data to page */ + left = PAGE_SIZE - frag->page_offset; + copy = (length > left)? left : length; + + ret = getfrag(from, (page_address(frag->page) + + frag->page_offset + frag->size), + offset, copy, 0, skb); + if (ret < 0) + return -EFAULT; + + /* copy was successful so update the size parameters */ + sk->sk_sndmsg_off += copy; + frag->size += copy; + skb->len += copy; + skb->data_len += copy; + offset += copy; + length -= copy; + + } while (length > 0); + + return 0; +} + void __init skb_init(void) { skbuff_head_cache = kmem_cache_create("skbuff_head_cache", @@ -1747,3 +1821,4 @@ EXPORT_SYMBOL(skb_prepare_seq_read); EXPORT_SYMBOL(skb_seq_read); EXPORT_SYMBOL(skb_abort_seq_read); EXPORT_SYMBOL(skb_find_text); +EXPORT_SYMBOL(skb_append_datato_frags); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 87e350069ab..17758234a3e 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -275,7 +275,8 @@ int ip_output(struct sk_buff *skb) { IP_INC_STATS(IPSTATS_MIB_OUTREQUESTS); - if (skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->tso_size) + if (skb->len > dst_mtu(skb->dst) && + !(skb_shinfo(skb)->ufo_size || skb_shinfo(skb)->tso_size)) return ip_fragment(skb, ip_finish_output); else return ip_finish_output(skb); @@ -688,6 +689,60 @@ csum_page(struct page *page, int offset, int copy) return csum; } +inline int ip_ufo_append_data(struct sock *sk, + int getfrag(void *from, char *to, int offset, int len, + int odd, struct sk_buff *skb), + void *from, int length, int hh_len, int fragheaderlen, + int transhdrlen, int mtu,unsigned int flags) +{ + struct sk_buff *skb; + int err; + + /* There is support for UDP fragmentation offload by network + * device, so create one single skb packet containing complete + * udp datagram + */ + if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) { + skb = sock_alloc_send_skb(sk, + hh_len + fragheaderlen + transhdrlen + 20, + (flags & MSG_DONTWAIT), &err); + + if (skb == NULL) + return err; + + /* reserve space for Hardware header */ + skb_reserve(skb, hh_len); + + /* create space for UDP/IP header */ + skb_put(skb,fragheaderlen + transhdrlen); + + /* initialize network header pointer */ + skb->nh.raw = skb->data; + + /* initialize protocol header pointer */ + skb->h.raw = skb->data + fragheaderlen; + + skb->ip_summed = CHECKSUM_HW; + skb->csum = 0; + sk->sk_sndmsg_off = 0; + } + + err = skb_append_datato_frags(sk,skb, getfrag, from, + (length - transhdrlen)); + if (!err) { + /* specify the length of each IP datagram fragment*/ + skb_shinfo(skb)->ufo_size = (mtu - fragheaderlen); + __skb_queue_tail(&sk->sk_write_queue, skb); + + return 0; + } + /* There is not enough support do UFO , + * so follow normal path + */ + kfree_skb(skb); + return err; +} + /* * ip_append_data() and ip_append_page() can make one large IP datagram * from many pieces of data. Each pieces will be holded on the socket @@ -777,6 +832,15 @@ int ip_append_data(struct sock *sk, csummode = CHECKSUM_HW; inet->cork.length += length; + if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) && + (rt->u.dst.dev->features & NETIF_F_UFO)) { + + if(ip_ufo_append_data(sk, getfrag, from, length, hh_len, + fragheaderlen, transhdrlen, mtu, flags)) + goto error; + + return 0; + } /* So, what's going on in the loop below? * @@ -1008,14 +1072,23 @@ ssize_t ip_append_page(struct sock *sk, struct page *page, return -EINVAL; inet->cork.length += size; + if ((sk->sk_protocol == IPPROTO_UDP) && + (rt->u.dst.dev->features & NETIF_F_UFO)) + skb_shinfo(skb)->ufo_size = (mtu - fragheaderlen); + while (size > 0) { int i; - /* Check if the remaining data fits into current packet. */ - len = mtu - skb->len; - if (len < size) - len = maxfraglen - skb->len; + if (skb_shinfo(skb)->ufo_size) + len = size; + else { + + /* Check if the remaining data fits into current packet. */ + len = mtu - skb->len; + if (len < size) + len = maxfraglen - skb->len; + } if (len <= 0) { struct sk_buff *skb_prev; char *data; diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 563b442ffab..614296a920c 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -147,7 +147,8 @@ static int ip6_output2(struct sk_buff *skb) int ip6_output(struct sk_buff *skb) { - if (skb->len > dst_mtu(skb->dst) || dst_allfrag(skb->dst)) + if ((skb->len > dst_mtu(skb->dst) && !skb_shinfo(skb)->ufo_size) || + dst_allfrag(skb->dst)) return ip6_fragment(skb, ip6_output2); else return ip6_output2(skb); @@ -768,6 +769,65 @@ out_err_release: *dst = NULL; return err; } +inline int ip6_ufo_append_data(struct sock *sk, + int getfrag(void *from, char *to, int offset, int len, + int odd, struct sk_buff *skb), + void *from, int length, int hh_len, int fragheaderlen, + int transhdrlen, int mtu,unsigned int flags) + +{ + struct sk_buff *skb; + int err; + + /* There is support for UDP large send offload by network + * device, so create one single skb packet containing complete + * udp datagram + */ + if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) { + skb = sock_alloc_send_skb(sk, + hh_len + fragheaderlen + transhdrlen + 20, + (flags & MSG_DONTWAIT), &err); + if (skb == NULL) + return -ENOMEM; + + /* reserve space for Hardware header */ + skb_reserve(skb, hh_len); + + /* create space for UDP/IP header */ + skb_put(skb,fragheaderlen + transhdrlen); + + /* initialize network header pointer */ + skb->nh.raw = skb->data; + + /* initialize protocol header pointer */ + skb->h.raw = skb->data + fragheaderlen; + + skb->ip_summed = CHECKSUM_HW; + skb->csum = 0; + sk->sk_sndmsg_off = 0; + } + + err = skb_append_datato_frags(sk,skb, getfrag, from, + (length - transhdrlen)); + if (!err) { + struct frag_hdr fhdr; + + /* specify the length of each IP datagram fragment*/ + skb_shinfo(skb)->ufo_size = (mtu - fragheaderlen) - + sizeof(struct frag_hdr); + ipv6_select_ident(skb, &fhdr); + skb_shinfo(skb)->ip6_frag_id = fhdr.identification; + __skb_queue_tail(&sk->sk_write_queue, skb); + + return 0; + } + /* There is not enough support do UPD LSO, + * so follow normal path + */ + kfree_skb(skb); + + return err; +} int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, int offset, int len, int odd, struct sk_buff *skb), @@ -860,6 +920,15 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, */ inet->cork.length += length; + if (((length > mtu) && (sk->sk_protocol == IPPROTO_UDP)) && + (rt->u.dst.dev->features & NETIF_F_UFO)) { + + if(ip6_ufo_append_data(sk, getfrag, from, length, hh_len, + fragheaderlen, transhdrlen, mtu, flags)) + goto error; + + return 0; + } if ((skb = skb_peek_tail(&sk->sk_write_queue)) == NULL) goto alloc_new_skb; diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c index 39a96c76810..c4f2a0ef748 100644 --- a/net/ipv6/mcast.c +++ b/net/ipv6/mcast.c @@ -164,7 +164,7 @@ static int ip6_mc_leave_src(struct sock *sk, struct ipv6_mc_socklist *iml, #define MLDV2_MASK(value, nb) ((nb)>=32 ? (value) : ((1<<(nb))-1) & (value)) #define MLDV2_EXP(thresh, nbmant, nbexp, value) \ ((value) < (thresh) ? (value) : \ - ((MLDV2_MASK(value, nbmant) | (1<<(nbmant+nbexp))) << \ + ((MLDV2_MASK(value, nbmant) | (1<<(nbmant))) << \ (MLDV2_MASK((value) >> (nbmant), nbexp) + (nbexp)))) #define MLDV2_QQIC(value) MLDV2_EXP(0x80, 4, 3, value) |