NDP.p4 trimming switch code targetting Tofino TNA #92
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jklr
reviewed
Sep 22, 2021
| # How it works | ||
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| To summarize, `ndp.p4` keeps an under-approximation of | ||
| the buffer occupancy for each port in ingress (by means of a |
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suggestion: 'each port' -> 'each egress port'
| the buffer occupancy for each port in ingress (by means of a | ||
| three-color meter). Whenever the meter turns red, it means | ||
| that the buffer is full and packet undergoes trimming. To achieve | ||
| that, we mark the packet to be cloned to egress and setup |
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'to be cloned from ingress to egress'
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NDP trimming implementation targeting Tofino v1 with TNA architecture. Contents of this PR: