Hi Mark, > -----Original Message----- > From: Chen, Jing D > Sent: Wednesday, February 03, 2016 3:23 PM > To: He, Shaopeng; dev at dpdk.org > Cc: Wang, Xiao W > Subject: RE: [PATCH] fm10k: fix switch manager high CPU usage > > Hi, > > > Best Regards, > Mark > > > > -----Original Message----- > > From: He, Shaopeng > > Sent: Thursday, January 28, 2016 1:47 PM > > To: dev at dpdk.org > > Cc: Chen, Jing D; Wang, Xiao W; He, Shaopeng > > Subject: [PATCH] fm10k: fix switch manager high CPU usage > > > > fm10k switch core uses source MAC + VID + SGLORT to do look up in MAC > > table. If no match, an exception interrupt will be sent to the switch > > manager, and cause high CPU usage. > > Above paragraph didn't describe the bug clearly. Can you add more Words on > it?
Thanks for the comments, I will send a v2. > > > This patch fixes this issue. A default SGLORT is assigned to each TX > > queue. This default value works for non-VMDq mode and current VMDq > > example. For advanced VMDq usage, e.g. > > different source MAC address for different TX queue, FTAG forwarding > > function could be used to change this default SGLORT value. > > > > Signed-off-by: Shaopeng He <shaopeng.he at intel.com> > > --- > > drivers/net/fm10k/fm10k_ethdev.c | 3 +++ > > 1 file changed, 3 insertions(+) > > > > diff --git a/drivers/net/fm10k/fm10k_ethdev.c > > b/drivers/net/fm10k/fm10k_ethdev.c > > index e4aed94..f6eb05d 100644 > > --- a/drivers/net/fm10k/fm10k_ethdev.c > > +++ b/drivers/net/fm10k/fm10k_ethdev.c > > @@ -675,6 +675,9 @@ fm10k_dev_tx_init(struct rte_eth_dev *dev) > > FM10K_WRITE_REG(hw, FM10K_TDBAH(i), > > base_addr >> (CHAR_BIT * sizeof(uint32_t))); > > FM10K_WRITE_REG(hw, FM10K_TDLEN(i), size); > > + > > + /* assign default SGLORT for each TX queue */ > > + FM10K_WRITE_REG(hw, FM10K_TX_SGLORT(i), hw- > > >mac.dglort_map); > > } > > > > /* set up vector or scalar TX function as appropriate */ > > -- > > 1.9.3
