- 28 Mar, 2009 1 commit
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David S. Miller authored
This reverts commit a3ac80a1. Alan Cox says that zero length writes do have special meaning and are useful in this protocol. Signed-off-by:
David S. Miller <davem@davemloft.net>
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- 27 Mar, 2009 39 commits
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Anton Vorontsov authored
When there are no free snums, UCC ethernet should gracefully fail, but currently it oopses this way: # ifconfig eth0 up fill_init_enet_entries: Can not get SNUM. ucc_geth_startup: Can not fill p_init_enet_param_shadow. eth0: Cannot configure net device, aborting. Unable to handle kernel paging request for data at address 0x00000190 Faulting instruction address: 0xc0294c88 Oops: Kernel access of bad area, sig: 11 [#1] [...] NIP [c0294c88] mutex_lock+0x0/0x1c LR [c01b6be8] phy_stop+0x20/0x70 Call Trace: [efb25da0] [efb2eb60] 0xefb2eb60 (unreliable) [efb25db0] [c01b2058] ucc_geth_stop+0x2c/0x8c [efb25dd0] [c01b4194] ucc_geth_open+0x48/0x27c [efb25df0] [c020eec0] dev_open+0xc0/0x118 [...] This is because the ucc_geth_stop() routine assumes that ugeth->phydev is always initialized by the ucc_geth_open(), while it is not in case of errors. If we add a check to the ucc_geth_stop(), then another oops pops up: Unable to handle kernel paging request for data at address 0x00000004 Faulting instruction address: 0xc01b46a4 Oops: Kernel access of bad area, sig: 11 [#1] [...] NIP [c01b46a4] adjust_link+0x20/0x1b4 LR [c01b770c] phy_state_machine+0xdc/0x44c Call Trace: [ef83bf10] [c021b388] linkwatch_schedule_work+0x74/0xf8 (unreliable) [ef83bf40] [c01b770c] phy_state_machine+0xdc/0x44c [ef83bf60] [c004c13c] run_workqueue+0xb8/0x148 [ef83bf90] [c004c870] worker_thread+0x70/0xd0 [ef83bfd0] [c00505fc] kthread+0x48/0x84 [ef83bff0] [c000f464] kernel_thread+0x4c/0x68 [...] That one happens because ucc_geth_stop() does not call phy_disconnect() and so phylib state machine is running without any idea that a MAC has just died. Also, when device tree specifies fixed-link, and CONFIG_FIXED_PHY is disabled, we'll get this oops: 0:01 not found eth2: Could not attach to PHY eth2: Cannot initialize PHY, aborting. Unable to handle kernel paging request for data at address 0x00000190 Faulting instruction address: 0xc02967d0 Oops: Kernel access of bad area, sig: 11 [#1] [...] NIP [c02967d0] mutex_lock+0x0/0x1c LR [c01b6bcc] phy_stop+0x20/0x70 Call Trace: [ef82be50] [efb6bb60] 0xefb6bb60 (unreliable) [ef82be60] [c01b2058] ucc_geth_stop+0x2c/0x8c [ef82be80] [c01b4194] ucc_geth_open+0x48/0x27c [ef82bea0] [c0210a04] dev_open+0xc0/0x118 [ef82bec0] [c020f85c] dev_change_flags+0x84/0x1ac [ef82bee0] [c037b768] ic_open_devs+0x168/0x2bc [ef82bf20] [c037ca98] ip_auto_config+0x90/0x28c [ef82bf60] [c0001b9c] do_one_initcall+0x34/0x1a0 [ef82bfd0] [c035e240] do_initcalls+0x38/0x58 [ef82bfe0] [c035e2c4] kernel_init+0x30/0x90 [ef82bff0] [c000f464] kernel_thread+0x4c/0x68 [...] And again, ucc_geth_stop() assumes that ugeth->phydev is there, while it isn't. This patch fixes all three oopses simply by rearranging some code: - In ucc_geth_open(): move init_phy() call to the beginning, so that we only call ucc_geth_stop() with a PHY attached; - Move phy_disconnect() call from ucc_geth_close() to ucc_geth_stop(), so that we'll always disconnect the PHY. Signed-off-by:
Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by:
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Dmitri Vorobiev authored
The inline function skb_gro_mac_header defined in include/linux/netdevice.h makes use of page_address(). Depending on configuration options, the latter is either defined as a macro or is declared as a function in another header file, namely include/linux/mm.h. However, include/linux/netdevice.h does not include include/linux/mm.h. On MIPS, this has produced the following build error: CC kernel/sysctl_check.o In file included from include/linux/icmpv6.h:173, from include/linux/ipv6.h:208, from include/net/ip_vs.h:26, from kernel/sysctl_check.c:6: include/linux/netdevice.h: In function 'skb_gro_mac_header': include/linux/netdevice.h:1132: error: implicit declaration of function 'page_address' include/linux/netdevice.h:1133: warning: pointer/integer type mismatch in conditional expression make[1]: *** [kernel/sysctl_check.o] Error 1 make: *** [kernel] Error 2 The patch adds the missing include and fixes the build error. Signed-off-by:Dmitri Vorobiev <dmitri.vorobiev@movial.com> Signed-off-by:
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Li Yang authored
Signed-off-by:
Li Yang <leoli@freescale.com> Signed-off-by:
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David S. Miller authored
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David S. Miller authored
Noticed by Li Yang. Signed-off-by: -
Divy Le Ray authored
DMA mapping can be expensive in the presence of iommus. Reduce the Rx iommu activity by mapping an entire page, and provide the H/W the mapped address + offset of the current page chunk. Reserve bits at the end of the page to track mapping references, so the page can be unmapped. Signed-off-by:
Divy Le Ray <divy@chelsio.com> Signed-off-by:
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Divy Le Ray authored
Separate ports from H/W Tx channels. Signed-off-by:
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Divy Le Ray authored
Use resource_size_t to declare mmio start and len variables. Print PEX error register after EEH resumed. Signed-off-by:
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Divy Le Ray authored
Enable timestamps, update delayed ack threshold for iSCSI/iWARP traffic Remove the len flag in Tx requests. It might corrupt offload trace packets. Update SGE context setup to avoid potential H/W misprogrammation. Signed-off-by:
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Divy Le Ray authored
Start queue set reclaim timers after the queue sets have been allocated successfully. Signed-off-by:
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Stephen Hemminger authored
Also, get rid of unnecessary memset. Signed-off-by:
Stephen Hemminger <shemminger@vyatta.com> Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
Also, use internal net_device_stats. Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
Remove unneeded memset (alloc_etherdev does it already). Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
net_device_ops conversion left the wrong poll_controller hook. Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
Also use internal net_device_stats Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
Convert madge and proteon drivers which are really just subclasses of tms380. Signed-off-by:
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
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Stephen Hemminger authored
Convert the UML network device to use internal network device stats. Signed-off-by:
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