Or Gerlitz wrote:
Vladimir Sokolovsky wrote:
add "ipoib_use_lro" module parameter to enable LRO.
How about that for this one we'll go on a finer granularity of being
able to set it per device through sysfs?
Yes, we thought about this and I am planning to add this granularity
later, in a different patch.
+ priv->lro.lro_mgr.get_skb_header = get_skb_hdr;
+ priv->lro.lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
+ priv->lro.lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
Looking in _lro_proc_skb() which is the code that would be processing
ipoib skbs, it seems that the values of lro_mgr.ip_summed and
lro_mgr.ip_summed_aggr should correlate to whether the HCA is capable of
doing checksum offload or not.
Or.
+static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
+ void **tcph, u64 *hdr_flags, void *priv)
+{
...
+
+ if (unlikely(skb->ip_summed != CHECKSUM_UNNECESSARY))
+ return -1;
This will return -1 if HCA is not capable of doing checksum offload.
Regards,
Vladimir
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