From: David S. Miller Date: Thu, 14 Apr 2016 20:22:12 +0000 (-0400) Subject: Merge branch 'mlxsw-devlink-shared-buffers' X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=cb689269acc8cf911a2b28d22da155ee83f8dbdc;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Merge branch 'mlxsw-devlink-shared-buffers' Jiri Pirko says: ==================== devlink + mlxsw: add support for config and control of shared buffers ASICs implement shared buffer for packet forwarding purposes and enable flexible partitioning of the shared buffer for different flows and ports, enabling non-blocking progress of different flows as well as separation of lossy traffic from loss-less traffic when using Per-Priority Flow Control (PFC). The shared buffer optimizes the buffer utilization for better absorption of packet bursts. This patchset implements API which is based on the model SAI uses. That is aligned with multiple ASIC vendors so this API should be vendor neutral. Userspace counterpart patchset for devlink iproute2 tool can be found here: https://github.com/jpirko/iproute2_mlxsw/tree/devlink_sb Couple of examples of usage: switch$ devlink sb help Usage: devlink sb show [ DEV [ sb SB_INDEX ] ] devlink sb pool show [ DEV [ sb SB_INDEX ] pool POOL_INDEX ] devlink sb pool set DEV [ sb SB_INDEX ] pool POOL_INDEX size POOL_SIZE thtype { static | dynamic } devlink sb port pool show [ DEV/PORT_INDEX [ sb SB_INDEX ] pool POOL_INDEX ] devlink sb port pool set DEV/PORT_INDEX [ sb SB_INDEX ] pool POOL_INDEX th THRESHOLD devlink sb tc bind show [ DEV/PORT_INDEX [ sb SB_INDEX ] tc TC_INDEX ] devlink sb tc bind set DEV/PORT_INDEX [ sb SB_INDEX ] tc TC_INDEX type { ingress | egress } pool POOL_INDEX th THRESHOLD devlink sb occupancy show { DEV | DEV/PORT_INDEX } [ sb SB_INDEX ] devlink sb occupancy snapshot DEV [ sb SB_INDEX ] devlink sb occupancy clearmax DEV [ sb SB_INDEX ] switch$ devlink sb show pci/0000:03:00.0: sb 0 size 16777216 ing_pools 4 eg_pools 4 ing_tcs 8 eg_tcs 8 switch$ devlink sb pool show pci/0000:03:00.0: sb 0 pool 0 type ingress size 12400032 thtype dynamic pci/0000:03:00.0: sb 0 pool 1 type ingress size 0 thtype dynamic pci/0000:03:00.0: sb 0 pool 2 type ingress size 0 thtype dynamic pci/0000:03:00.0: sb 0 pool 3 type ingress size 200064 thtype dynamic pci/0000:03:00.0: sb 0 pool 4 type egress size 13220064 thtype dynamic pci/0000:03:00.0: sb 0 pool 5 type egress size 0 thtype dynamic pci/0000:03:00.0: sb 0 pool 6 type egress size 0 thtype dynamic pci/0000:03:00.0: sb 0 pool 7 type egress size 0 thtype dynamic switch$ devlink sb port pool show sw0p7 pool 0 sw0p7: sb 0 pool 0 threshold 16 switch$ sudo devlink sb port pool set sw0p7 pool 0 th 15 switch$ devlink sb port pool show sw0p7 pool 0 sw0p7: sb 0 pool 0 threshold 15 switch$ devlink sb tc bind show sw0p7 tc 0 type ingress sw0p7: sb 0 tc 0 type ingress pool 0 threshold 10 switch$ sudo devlink sb tc bind set sw0p7 tc 0 type ingress pool 0 th 9 switch$ devlink sb tc bind show sw0p7 tc 0 type ingress sw0p7: sb 0 tc 0 type ingress pool 0 threshold 9 switch$ sudo devlink sb occupancy snapshot pci/0000:03:00.0 switch$ devlink sb occupancy show sw0p7 sw0p7: pool: 0: 82944/3217344 1: 0/0 2: 0/0 3: 0/0 4: 0/384 5: 0/0 6: 0/0 7: 0/0 itc: 0(0): 96768/3217344 1(0): 0/0 2(0): 0/0 3(0): 0/0 4(0): 0/0 5(0): 0/0 6(0): 0/0 7(0): 0/0 etc: 0(4): 0/384 1(4): 0/0 2(4): 0/0 3(4): 0/0 4(4): 0/0 5(4): 0/0 6(4): 0/0 7(4): 0/0 switch$ sudo devlink sb occupancy clearmax pci/0000:03:00.0 ==================== Signed-off-by: David S. Miller --- cb689269acc8cf911a2b28d22da155ee83f8dbdc