chore(sglang): support dp attention routing (#1415)

container/Dockerfile.sglang

@@ -135,9 +135,8 @@ RUN if [ "$ARCH" = "arm64" ]; then \
 
 # Install sglang
 # Once either 0.4.6post6 or 0.4.7 is released, we can switch back to using the published version
-# This commit references multiple perf fixes for DP attention and NIXL https://github.com/sgl-project/sglang/pull/6780
-# 6/2(ishan) - moving to ToT for performance purposes
-ARG SGLANG_COMMIT="6376b632eb4daef306b89ede0eabdcb89ddff728"
+# This commit references a fix to add DP attention based routing along with other perf fixes https://github.com/sgl-project/sglang/pull/6884
+ARG SGLANG_COMMIT="f1569876d54dd3b6601f5280f12652e9fbb1375c"
 RUN --mount=type=cache,target=/root/.cache/uv \
     git clone https://github.com/sgl-project/sglang.git && \
     cd sglang && \

examples/sglang/utils/protocol.py

@@ -60,3 +60,4 @@ class DisaggPreprocessedRequest(BaseModel):
     bootstrap_host: str
     bootstrap_port: int
     bootstrap_room: int
+    data_parallel_rank: Optional[int] = None