> -----Original Message----- > From: Intel-wired-lan <[email protected]> On Behalf Of > Takeru Hayasaka > Sent: Monday, February 12, 2024 7:34 AM > To: Brandeburg, Jesse <[email protected]>; Nguyen, Anthony L > <[email protected]>; David S. Miller <[email protected]>; Eric > Dumazet <[email protected]>; Jakub Kicinski <[email protected]>; Paolo Abeni > <[email protected]>; Jonathan Corbet <[email protected]> > Cc: [email protected]; [email protected]; > [email protected]; [email protected]; Marcin Szycik > <[email protected]>; [email protected]; Takeru > Hayasaka <[email protected]>; [email protected]; > [email protected] > Subject: [Intel-wired-lan] [PATCH net-next v8 1/2] ethtool: Add GTP RSS hash > options to ethtool.h > > This is a patch that enables RSS functionality for GTP packets using ethtool. > > A user can include TEID and make RSS work for GTP-U over IPv4 by doing the > following:`ethtool -N ens3 rx-flow-hash gtpu4 sde` > > In addition to gtpu(4|6), we now support gtpc(4|6),gtpc(4|6)t,gtpu(4|6)e, > gtpu(4|6)u, and gtpu(4|6)d. > > gtpc(4|6): Used for GTP-C in IPv4 and IPv6, where the GTP header format does > not include a TEID. > gtpc(4|6)t: Used for GTP-C in IPv4 and IPv6, with a GTP header format that > includes a TEID. > gtpu(4|6): Used for GTP-U in both IPv4 and IPv6 scenarios. > gtpu(4|6)e: Used for GTP-U with extended headers in both IPv4 and IPv6. > gtpu(4|6)u: Used when the PSC (PDU session container) in the GTP-U extended > header includes Uplink, applicable to both IPv4 and IPv6. > gtpu(4|6)d: Used when the PSC in the GTP-U extended header includes Downlink, > for both IPv4 and IPv6. > > GTP generates a flow that includes an ID called TEID to identify the tunnel. > This tunnel is created for each UE (User Equipment).By performing RSS based on > this flow, it is possible to apply RSS for each communication unit from the > UE. > Without this, RSS would only be effective within the range of IP addresses. > For > instance, the PGW can only perform RSS within the IP range of the SGW. > Problematic from a load distribution perspective, especially if there's a bias > in the terminals connected to a particular base station.This case can be > solved by using this patch. > > Signed-off-by: Takeru Hayasaka <[email protected]> > Reviewed-by: Marcin Szycik <[email protected]> > --- > v2->v3: Based on Harald-san's review, I added documentation and comments to > ethtool.h and ice.rst. > v3->v4: Based on Marcin-san's review, I added the missing code for GTPC and > GTPC_TEID, and revised the documentation and comments. > v4->v5: Based on Marcin-san's review, I fixed rename and wrong code regarding > GTPC > v5->v6: Based on Marcin-san's review, Undoing the addition of unnecessary > blank lines.Minor fixes. > v6->v7 Based on Jakub-san's review, Split the patch. > v7->v8: There are no code changes. I've resent the patch, including > Marcin-san's > patch, because PatchWork did not interpret the patch correctly.Simon-san told > me. Thanks. > include/uapi/linux/ethtool.h | 48 ++++++++++++++++++++++++++++++++++++ > 1 file changed, 48 insertions(+) >
Tested-by: Pucha Himasekhar Reddy <[email protected]> (A Contingent worker at Intel)
