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  1. Aug 10, 2013
    • William Manley's avatar
      net: igmp: Reduce Unsolicited report interval to 1s when using IGMPv3 · cab70040
      William Manley authored 
      

If an IGMP join packet is lost you will not receive data sent to the
multicast group so if no data arrives from that multicast group in a
period of time after the IGMP join a second IGMP join will be sent.  The
delay between joins is the "IGMP Unsolicited Report Interval".

Previously this value was hard coded to be chosen randomly between 0-10s.
This can be too long for some use-cases, such as IPTV as it can cause
channel change to be slow in the presence of packet loss.

The value 10s has come from IGMPv2 RFC2236, which was reduced to 1s in
IGMPv3 RFC3376.  This patch makes the kernel use the 1s value from the
later RFC if we are operating in IGMPv3 mode.  IGMPv2 behaviour is
unaffected.

Tested with Wireshark and a simple program to join a (non-existent)
multicast group.  The distribution of timings for the second join differ
based upon setting /proc/sys/net/ipv4/conf/eth0/force_igmp_version.

Signed-off-by: default avatarWilliam Manley <william.manley@youview.com>
Acked-by: default avatarHannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: default avatarBenjamin LaHaise <bcrl@kvack.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cab70040
  3. Aug 09, 2013
  5. Aug 08, 2013
  7. Aug 06, 2013
    • Claudiu Manoil's avatar
      gianfar: Cleanup TxFCB insertion on xmit · 0d0cffdc
      Claudiu Manoil authored 
      

Cleanup gfar_start_xmit()'s fast path by factoring out "redundant"
FCB insertion code (repeated gfar_add_fcb() calls and related)
and by reducing the number of if() clauses (i.e. if(fcb) checks).
Improve maintainability (e.g. there's less code and easier to read)
also by introducing do_csum and do_vlan to mark the other 2 Tx TOE
functionalities, following the same model as do_tstamp.
fcb_len may also be 0 now, to mark that Tx FCB insertion conditions
(do_csum, do_vlan, do_tstamp) have not been met.

Signed-off-by: default avatarClaudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0d0cffdc
    • Claudiu Manoil's avatar
      gianfar: Fix Tx csum generation errata handling · 02d88fb4
      Claudiu Manoil authored 
      

Both [eTSEC76] and [eTSEC12] errata relate to Tx checksum generation
(for some MPC83xx and MCP8548 older revisions). They require the same
workaround: manual checksum computation and insertion, and disabling
the H/W Tx csum acceleration feature (per frame) through Tx FCB
(Frame Control Block) csum offload settings.

The workaround for [eTSEC76] needs to be fixed because it currently
fails to disable H/W Tx csum insertion via FCB. This patch fixes it
and provides a common workaround implementation for both Tx csum errata.

Signed-off-by: default avatarClaudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      02d88fb4
    • Veaceslav Falico's avatar
      bonding: remove locking from bond_set_rx_mode() · 7864a1ad
      Veaceslav Falico authored 
      

We're already protected by RTNL lock, so nothing can happen to bond/its
slaves, and thus the locking is useless here (both bond->lock and
bond->curr_active_slave).

Also, add ASSERT_RTNL() both to bond_set_rx_mode() and bond_hw_addr_swap()
to catch possible uses of it without RTNL locking.

This patch also saves us from a lockdep false-positive in
bond_set_rx_mode() vs bond_hw_addr_swap().

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: default avatarVeaceslav Falico <vfalico@redhat.com>
Signed-off-by: default avatarNikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7864a1ad
    • Mugunthan V N's avatar
      drivers: net: cpsw: Add support for new CPSW IP version · c193f365
      Mugunthan V N authored 
      

The new IP version has a minor changes and the offsets are same as the
previous version, so adding new IP version support in the driver.

Signed-off-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: default avatarFelipe Balbi <balbi@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c193f365
    • fan.du's avatar
      sctp: Pack dst_cookie into 1st cacheline hole for 64bit host · 5a139296
      fan.du authored 
      

As dst_cookie is used in fast path sctp_transport_dst_check.

Before:
struct sctp_transport {
	struct list_head           transports;           /*     0    16 */
	atomic_t                   refcnt;               /*    16     4 */
	__u32                      dead:1;               /*    20:31  4 */
	__u32                      rto_pending:1;        /*    20:30  4 */
	__u32                      hb_sent:1;            /*    20:29  4 */
	__u32                      pmtu_pending:1;       /*    20:28  4 */

	/* XXX 28 bits hole, try to pack */

	__u32                      sack_generation;      /*    24     4 */

	/* XXX 4 bytes hole, try to pack */

	struct flowi               fl;                   /*    32    64 */
	/* --- cacheline 1 boundary (64 bytes) was 32 bytes ago --- */
	union sctp_addr            ipaddr;               /*    96    28 */

After:
struct sctp_transport {
	struct list_head           transports;           /*     0    16 */
	atomic_t                   refcnt;               /*    16     4 */
	__u32                      dead:1;               /*    20:31  4 */
	__u32                      rto_pending:1;        /*    20:30  4 */
	__u32                      hb_sent:1;            /*    20:29  4 */
	__u32                      pmtu_pending:1;       /*    20:28  4 */

	/* XXX 28 bits hole, try to pack */

	__u32                      sack_generation;      /*    24     4 */
	u32                        dst_cookie;           /*    28     4 */
	struct flowi               fl;                   /*    32    64 */
	/* --- cacheline 1 boundary (64 bytes) was 32 bytes ago --- */
	union sctp_addr            ipaddr;               /*    96    28 */

Signed-off-by: default avatarFan Du <fan.du@windriver.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5a139296
    • Veaceslav Falico's avatar
      bonding: add bond_time_in_interval() and use it for time comparison · e7f63f1d
      Veaceslav Falico authored 
      

Currently we use a lot of time comparison math for arp_interval
comparisons, which are sometimes quite hard to read and understand.

All the time comparisons have one pattern:
(time - arp_interval_jiffies) <= jiffies <= (time + mod *
arp_interval_jiffies + arp_interval_jiffies/2)

Introduce a new helper - bond_time_in_interval(), which will do the math in
one place and, thus, will clean up the logical code. This helper introduces
a bit of overhead (by always calculating the jiffies from arp_interval),
however it's really not visible, considering that functions using it
usually run once in arp_interval milliseconds.

There are several lines slightly over 80 chars, however breaking them would
result in more hard-to-read code than several character after the 80 mark.

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: default avatarVeaceslav Falico <vfalico@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      e7f63f1d
    • Veaceslav Falico's avatar
      bonding: call slave_last_rx() only once per slave · def4460c
      Veaceslav Falico authored 
      

Simple cleanup to not call slave_last_rx() on every time function. It won't
give any measurable boost - but looks cleaner and easier to understand.

There are no time-consuming functions in between these calls, so it's safe
to call it in the beginning only once.

CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: default avatarVeaceslav Falico <vfalico@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      def4460c
    • Wei Yongjun's avatar
      tile: fix missing unlock on error in tile_net_open() · 1155e964
      Wei Yongjun authored 
      Add the missing unlock before return from function tile_net_open()
in the error handling case.

Introduced by commit f3286a3a

.
(tile: support multiple mPIPE shims in tilegx network driver)

Signed-off-by: default avatarWei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: default avatarChris Metcalf <cmetcalf@tilera.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1155e964
    • Jingoo Han's avatar
      net: mlx4: Staticize local functions · f094668c
      Jingoo Han authored 
      

These local functions are used only in this file.
Fix the following sparse warnings:

drivers/net/ethernet/mellanox/mlx4/cmd.c:803:5: warning: symbol 'MLX4_CMD_UPDATE_QP_wrapper' was not declared. Should it be static?
drivers/net/ethernet/mellanox/mlx4/cmd.c:812:5: warning: symbol 'MLX4_CMD_GET_OP_REQ_wrapper' was not declared. Should it be static?
drivers/net/ethernet/mellanox/mlx4/cmd.c:1547:5: warning: symbol 'mlx4_master_immediate_activate_vlan_qos' was not declared. Should
it be static?

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Acked-By: default avatarAmir Vadai <amirv@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f094668c
    • Jingoo Han's avatar
      net: micrel: Staticize local functions · 51a700db
      Jingoo Han authored 
      

These local functions are used only in this file.
Fix the following sparse warnings:

drivers/net/ethernet/micrel/ks8842.c:708:6: warning: symbol 'ks8842_handle_rx' was not declared. Should it be static?
drivers/net/ethernet/micrel/ks8842.c:718:6: warning: symbol 'ks8842_handle_tx' was not declared. Should it be static?
drivers/net/ethernet/micrel/ks8842.c:727:6: warning: symbol 'ks8842_handle_rx_overrun' was not declared. Should it be static?
drivers/net/ethernet/micrel/ks8842.c:735:6: warning: symbol 'ks8842_tasklet' was not declared. Should it be static?
drivers/net/ethernet/micrel/ks8851_mll.c:691:6: warning: symbol 'ks_enable_qmu' was not declared. Should it be static?

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      51a700db
    • Jingoo Han's avatar
      be2net: Staticize local functions · 4188e7df
      Jingoo Han authored 
      

These local functions are used only in this file.
Fix the following sparse warnings:

drivers/net/ethernet/emulex/benet/be_main.c:475:6: warning: symbol 'populate_erx_stats' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_main.c:1485:6: warning: symbol 'be_rx_compl_process_gro' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_main.c:2262:5: warning: symbol 'be_poll' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_main.c:3223:6: warning: symbol 'flash_cookie' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_main.c:3280:27: warning: symbol 'get_fsec_info' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_cmds.c:1013:5: warning: symbol 'be_cmd_mccq_ext_create' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_cmds.c:1071:5: warning: symbol 'be_cmd_mccq_org_create' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_cmds.c:3166:5: warning: symbol 'be_cmd_get_profile_config_mbox' was not declared. Should it be
static?
drivers/net/ethernet/emulex/benet/be_cmds.c:3194:5: warning: symbol 'be_cmd_get_profile_config_mccq' was not declared. Should it be
static?
drivers/net/ethernet/emulex/benet/be_roce.c:96:6: warning: symbol '_be_roce_dev_remove' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_roce.c:113:6: warning: symbol '_be_roce_dev_open' was not declared. Should it be static?
drivers/net/ethernet/emulex/benet/be_roce.c:129:6: warning: symbol '_be_roce_dev_close' was not declared. Should it be static?

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      4188e7df
    • Jingoo Han's avatar
      bna: Staticize local functions · 7f4341fe
      Jingoo Han authored 
      

bna_rx_sm_stop_wait_entry(), bna_rx_sm_rxf_stop_wait_entry(),
bna_rx_sm_started_entry(), bna_rx_sm_cleanup_wait_entry(),
and bna_rx_sm_cleanup_wait() are used only in this file.
Fix the following sparse warnings:

drivers/net/ethernet/brocade/bna/bna_tx_rx.c:1423:1: warning: symbol 'bna_rx_sm_stop_wait_entry' was not declared. Should it be
static?
drivers/net/ethernet/brocade/bna/bna_tx_rx.c:1476:1: warning: symbol 'bna_rx_sm_rxf_stop_wait_entry' was not declared. Should it be
static?
drivers/net/ethernet/brocade/bna/bna_tx_rx.c:1532:1: warning: symbol 'bna_rx_sm_started_entry' was not declared. Should it be
static?
drivers/net/ethernet/brocade/bna/bna_tx_rx.c:1597:1: warning: symbol 'bna_rx_sm_cleanup_wait_entry' was not declared. Should it be
static?
drivers/net/ethernet/brocade/bna/bna_tx_rx.c:1602:1: warning: symbol 'bna_rx_sm_cleanup_wait' was not declared. Should it be static?

Signed-off-by: default avatarJingoo Han <jg1.han@samsung.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      7f4341fe
  9. Aug 05, 2013